Western Digital WD61HKVS-78AUSYz WD Purple Hard Drive OEM User Manual

Western Digital WD61HKVS-78AUSYz WD Purple Hard Drive OEM User Manual

DESCRIPTION AND FEATURES

General Description

WD Purple Surveillance Storage is built for 24/7 always-on surveillance in high definition security systems that utilize higher hard drive bay counts. Exclusive AllFrame 4K™ technology works with ATA streaming to reduce error pixilation and video interruptions that occur when desktop hard drives are incorrectly used as storage in security systems.

Product Features

• Serial ATA (SATA) — Serial ATA (SATA) is the industry standard bus interface for hard drives. It offers many advantages including increased transfer rate, improved signal integrity, enhanced data protection, and hot plug support.

• AllFrame 4K™ Technology — All WD Purple™ drives are equipped with AllFrame 4K™ technology, which improves ATA streaming to help reduce frame loss, improve overall video playback, and increase the number of hard drive bays supported within a NVR. Help make your surveillance solution future-ready knowing that WD Purple™ drives are ready for ultra high definition cameras.

• Premium Protection — Designed with tarnish-resistant components, this WD Purple drive offers premium protection in harsh environments where surveillance systems may be installed.

• IntelliSeek™ — Calculates optimum seek speeds to lower power consumption, noise, and vibration.

• Dynamic Fly Height Control — Designed to compensate for head/media separation changes due to temperature and altitude. This feature adds video quality margins across temperature and altitude changes.

• NoTouch™ Ramp Load Technology — The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.

• Dual Actuator Technology — A head positioning system with dual-stage actuators that improves positioning accuracy over the data track(s). The primary stage provides course displacement; the secondary stage uses piezoelectric motion to fine tune the head positioning to a higher degree of precision.

• Advanced Format (AF) — Technology adopted by Western Digital and other drive manufacturers as one of multiple ways to continue growing hard drive capacities. AF is a more efficient media format that enables increased areal densities.

• Native Command Queuing (NCQ) — Performance of a random I/O workload can be improved through intelligent re-ordering of the I/O requests so they read/  write to and from the nearest available sectors and minimize the need for additional disk revolutions or head actuator movement. This improvement can be achieved though Native Command Queuing (NCQ), which is supported by these hard drives.

• Pre-emptive Wear Leveling (PWL) — This Western Digital feature provides a solution for protecting the recording media against mechanical wear. In cases where the drive is so busy with incoming commands that it is forced to stay in a same cylinder position for a long time, the PWL control engine initiates forced seeks so that disk lubricant maintains an even distribution and does not become.

• depleted. This feature ensures reliability for applications that perform a high
  incidence of read/write operations at the same physical location on the disk.

• S.M.A.R.T. Command Transport (SCT) — The SCT Command Transport feature set provides a method for a host to send commands and data to a device and for a device to send data and status to a host using log pages.

• World Wide Name (WWN) — The World Wide Name (WWN) defined in ATA/ ATAPI-7 is a modification of the IEEE extended unique identifier 64 bit standard (EUI-64) and is comprised of three major components: naming authority, organizationally unique identifier (OUI) and serial number. Western Digital’s OUI is 0014EEh.

• Reliability Features Set-Data Lifeguard™ — Representing Western Digital’s ongoing commitment to data protection, Data Lifeguard includes features that enhance the drives ability to prevent data loss. Data Lifeguard data protection utilities include thermal management, an environmental protection system, and embedded error detection and repair features that automatically detect, isolate, and repair problem areas that may develop over the extended use of the hard drive. With these enhanced data reliability features, the drive can perform more accurate monitoring, error repair, and deliver exceptional data security.

• Hot Plug Support — SATA supports hot plugging (also known as “hot swapping”), the ability to swap out a failed hard drive without having to power down the system or reboot. This capability contributes to both data availability and serviceability without any associated downtime, making it a critical feature for extending SATA into enterprise applications.

• Active LED Status — The drive supports external LED requirements. It provides an activity LED output which is ON during command execution and OFF otherwise.

• Fluid Dynamic Bearings (FDB) — Bearing design that incorporates a layer of highviscosity lubricant instead of ball bearings in the hard drive spindle motor. FDB designs provide increased non-operational shock resistance, speed control, and improved acoustics.

• Staggered Spin-Up — A feature that allows the system to control whether the drive will spin up immediately or wait until the interface is fully ready (available for specific OEM configurations).

• Power Management — The drive supports the ATA and SATA power management command set, allowing the host to reduce the power consumption of the drive by issuing a variety of power management commands.

• Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.) — S.M.A.R.T. enables a drive’s internal status to be monitored through diagnostic commands at the host level and during offline activities. S.M.A.R.T. devices employ data analysis algorithms that are used to predict the likelihood of some near-term degradation or fault conditions. When used with a S.M.A.R.T. application, the drive can alert the host system of a negative reliability status condition. The host system can then warn the user of the impending risk of data loss and recommend an appropriate action.

• ATA Security — The drive supports the ATA Security Mode Feature set. The ATA Security Mode feature set allows the user to create a device lock password that prevents unauthorized hard disk access even if the drive is removed from the host computer. The correct password must be supplied to the hard drive in order to access user data. Both the User and Master Password features are supported, along with the High and Maximum security modes. The Master Password Revision

Description and Features
code is also supported. This feature varies by drive configuration and may not be available on all configurations.

SPECIFICATIONS

Performance Specifications

Table 2-1. Performance Specifications

1. megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second. Effective maximum SATA 3 Gb/s transfer rate calculated according to the Serial ATA specification published by the SATA-IO organization Lord of the date of this specification sheet. Visit
2. Defined as the time from power-on to the setting of Drive Ready.
3. Controlled unload at ambient condition.

Physical Specifications

Table 2-2. Physical Specifications1,2

1. Specifications represented are of a typical production drive and may be subject to change or variation without notice.
2. As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second. Effective maximum SATA 3 Gb/s transfer rate calculated according to the Serial ATA specification published by  the SATA-IO organization as of the date of this specification sheet. Visit www.sata-io.org for details.

Physical Dimensions
Table 2-3. Physical Dimensions

| English| Metric
---|---|---
Dimension| Tolerance| Dimension| Tolerance
Height| 1.028 inches| MAX| 26.1 mm| MAX
Length| 5.787 inches| MAX| 147.0 mm| MAX
Width| 4.00 inches| ±0.01 inch| 101.6 mm| ±0.25 mm
Weight| 1.26 pounds| ±10%| 0.57 kg| ±10%

Mechanical Specifications

Figure 2-1 shows the mounting dimensions and locations of the screw holes for the drive.
Note: Unless otherwise specified, all measurements are in millimeters.
Figure 2-1. Mounting Dimensions

Electrical Specifications
2.4.1 Current Requirements and Power Dissipation
All values are typical (25°C, 5.0V, and 12V input). 3.3V Serial ATA power not utilized in this product.

Input Voltage Requirements
The input voltage requirements are +5.0V ± 5% and +12.0V ± 10%.

Voltage Ripple
Table 2-5. Voltage Ripple

| Maximum (mV pp)| MHz
---|---|---
+5V DC| 100| 0-30
+12V DC| 200| 0-30

Environmental Specifications

Shock and Vibration

Table 2-6. Shock and Vibration

Shock

Operating                            70G, 2 ms (read/write)Non-operating (2 ms)         250G Note: Half-sine wave, measured without shock isolation and without non-recoverable errors.
Vibration
OperatingNon-operating Sweep Rate| Linear: 20-300 Hz, 0.75G (0 to peak)Random: 0.008 g 2 /Hz (10-300 Hz) Linear: 20-500 Hz, 4.0G (0 to peak) Random: 0.05 g 2 /Hz (10-300 Hz)0.5 octave/minute minimum| |
Rotational Vibration 1
12.5 rad/sec2 based on the following PSD profile maintaining < 20% degration:
Frequency (Hz)| 20| 200| 300| 900| 1400| 1500
(Rad/sec2)2/Hz| 0.035| 0.035| 0.2| 0.2| 0.002| 0.002
Rotational Shock Non-Operating
Amplitude Duration| 20K rad/sec 2 2 ms| |

1 Rotational vibration spec is applicable to 4TB and 6TB only.

Operating Vibration
Drives are tested by applying a random excitation in each linear axis, one axis at a time. The drive incurs no physical damage and no hard errors while subjected to continuous vibration not exceeding the level listed in Table 2-6. Operating performance may degrade during periods of exposure to continuous vibration.

Non-Operating Vibration
Note: This specification applies to handling and transportation of unmounted drives. Drives are tested by applying a random excitation in each linear axis, one axis at a time. The drive incurs no physical damage when subjected to continuous vibration not exceeding the level listed in Table 2-6.

Packaged Shock and Vibration
The shipping packaging is designed to meet the National/International Safe Transit Association (N/ISTA) standards for packaged products. The drive incurs no physical damage when subjected to the N/ISTA standards.

Temperature and Humidity
The system environment must allow sufficient air flow to limit maximum surface temperatures as defined. AFR can be affected by workload and operating temperature. See Section 2.6 Reliability Specification and Characteristics on page 17 for further details.

Table 2-7. Temperature and Humidity

Temperature & Humidity

Operation
Min-Max Base Casting Temperature1| 0°C to 65°C (32°F to 149°F)
Humidity| 5-95% RH non-condensing 37.7°C (maximum wet bulb)
Thermal Gradient| 20°C/hour (maximum)
Humidity Gradient| 20%/hour (maximum)
Non-Operation
Temperature| -40°C to 70°C on the base casting (-40°F to 158°F)
Humidity| 5-95% RH non-condensing
| 40°C (maximum wet bulb)
Thermal Gradient| 30°C/hour (maximum)
Humidity Gradient| 20%/hour (maximum)

Operating at elevated base casting temperatures will result in a higher AFR.

Thermocouple Location

Table 2-8. Thermocouple Location

Figure 2-2. Drive Base Casting Thermocouple Location

Cooling

If forced air cooling is required, the drive must be positioned to receive airflow from one or more fans as indicated in Figure 2-3.

Figure 2-3. Forced Airflow Direction

Atmospheric Pressure
Table 2-9. Atmospheric Pressure

Altitude

Operating :  -1,000 feet to 10,000 feet (-305M to 3,050M)
Non-operating: -1,000 feet to 40,000 feet (-305M to 12,200M)

Atmospheric Condition

Environments that contain elevated levels of corrosives (e.g., hydrogen sulfide, sulfur oxides, or hydrochloric acid, sulfurous gases, chlorine and nitric oxide) should be avoided and ideally kept below G2 severity level defined in ISA–71.04–1985. Care must be taken to avoid using any compound/material in a way that creates an elevated level of corrosive materials in the atmosphere surrounding the disk drive. Vulcanized rubber is an example of a material which may contain corrosive compound/materials.

Care must also be taken to avoid the use of any organometallic (e.g., organosilicons or organotin) compound/material in a way that creates elevated vapor levels of these compounds/materials in the atmosphere surrounding the disk drive.

Silicone based Thermal Interface Materials (TIM), silicone-based tapes, caulking/RTV pastes, silicone rubbers and silicone oil lubricants are examples of materials which may create elevated vapor levels of organometallic compound/materials.

Use of the disk drive in these abnormal or other chemically-challenging environments is not recommended and increases the risk for failure. If any of these materials are considered in system design, it is recommended to consult with Western Digital Corporation.

Acoustics

Table 2-10. Acoustics

TYPICAL SOUND POWER LEVEL 1

Idle Mode (average dBA)2| 23
Seek Mode (average dBA)| 27

RoHS (Restriction of Hazardous Substances)

WD complies with the Restriction of Hazardous Substances (RoHS) Directive 2011/ 65/EU of the European Parliament, which is effective in the EU beginning July 8, 2011. RoHS aims to protect human health and the environment by restricting the use of certain hazardous substances in new equipment, and consists of restrictions on lead, mercury, cadmium, and other substances.

Reliability Specification and Characteristics
The Mean Time between Failure (MTBF) calculations assumes operation at nominal voltages, a base casting temperature of 40°C, and the workload usage of a typical surveillance environment. Workload is defined as the number of bytes transferred by the user to/from the drive. If the system(s) that the drive is installed in are not capable of meeting the characteristics listed below, please use a WD drive that  matches your system(s)’ capability. Operating drives outside any of the reliability characteristics below will result in a higher AFR.

Table 2-11. Reliability Specification and Characteristics

Reliability Specification

MTBF| 1,000,000
Reliability Characteristics
Base Casting Temperature| 40°C
Annual Power on Hours (POH)| <=8760
Total Workload over the Limited Warranty Period1| <=180TB/Yr

Connectors and Cables

Serial ATA Connectors
For information on SATA data connectors, including the pin definitions of the SATA connectors and the corresponding signal names and signal functions, refer to the latest SATA specification available for download at www.serialata.org.

Cabling Requirements for Serial ATA
The SATA cable consists of four conductors in two differential pairs. The cable may also include drain wires to be terminated to the ground pins in the SATA cable receptacle connectors. See the SATA specification for cable specifications. The cable’s maximum length is one meter.

Agency Approvals

• PR2000M-1 Regulatory Number (R/N): 810011 These drives meet the standards of the following regulatory agencies:
• Federal Communication Commission: Verified to comply with FCC Rules for Radiated and Conducted Emission, Part 15, Subpart B, for Class B Equipment.
• Underwriters Laboratories: Bi-National UL Standard CAN/CSA-C22.2 No. 60950/ UL 60950-1. Standard for Safety of Information Technology Equipment, including Electrical Business Equipment.
• TUV: IEC 60950-1 per EN 60950-1, Standard for Safety of Information Technology Equipment, including Electrical Business Equipment.
• CE Compliance for Europe Countries and Morocco: Verified to comply with EN55032:2015 for RF Emissions and EN55024:1998, A1:2001 + A2:2003, EN61000-3- 2:2000, EN61000-3-3:1995 + A1:2001 for Generic Immunity as applicable.
• RCM Compliance for Australia and New Zealand: Verified to comply with AS/ NZ3548 for RF Emissions as required by the Australian Communications Authority.
• Korean KC Mark: Registered as a Class-B product with the South Korean Ministry of Information and Communication.
• Taiwan BSMI ROHS Compliance : Certified as a Class-B product with the Bureau of Standards Metrology and Inspection (BSMI ROHS).
  

Full Model Number Specification
Table 2-12 below provides a summary specification of the model number suffix for this product platform.

Table 2-12. Full Model Number Description

Model Number Format| ID| Product Brand| Description
---|---|---|---
WD61HKVS-78AUSYz| AUS| WD Purple| PR2000M-1 256MB SATA 6 Gb/s 6TB SRV
WD41HKVS-78AUTYz| AUT| WD Purple| PR2000M-1 256MB SATA 6 Gb/s 4TB SRV

PRODUCT FEATURES

• SATA 6 Gb/s
• AllFrame 4K™ Technology
• Premium Protection
• IntelliSeek™
• Dynamic Fly Height Control
• NoTouch™ Ramp Load Technology
• Dual Actuator Technology
• Advanced Format (AF)
• Native Command Queuing (NCQ)
• Pre-emptive Wear Leveling (PWL)
• S.M.A.R.T. Command Transport (SCT)
• World Wide Name (WWN)
• Reliability Features Set
• Hot Plug Support
• Active LED Status
• Fluid Dynamic Bearings (FDB)
• Staggered Spin-Up and Activity Indication (SATA Power Pin 11)
• Power Management
• Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.)
• Security Mode

SATA 6 Gb/s
SATA 6 Gb/s is the latest generation interface for SATA hard drives with the following features:

• Native Command Queuing (NCQ) — server feature for performance in random I/ O transaction environments. It aggregates many small random data transfers and allows the disk to reorder the commands in a sequential order for faster access.
• Improved Power Management— provides improved power management features including Host Initiated SATA Power Management (HIPM) and Device Initiated SATA Power Management (DIPM).
• Staggered Spin-up — allows the system to control whether the drive will spin up immediately or wait until the interface is fully ready before spinning up.
• Asynchronous Signal Recovery (ASR) — robustness feature that improves signal recovery.
• Enclosure Services — defines external enclosure management and support features.
• Backplane Interconnect — defines how to lay out signal line traces in a backplane.
• Auto-activate DMA — provides increased command efficiency through automated activation of the DMA controller.

AllFrame 4K™ Technology
All WD Purple™ drives are equipped with AllFrame 4K™ technology, which improves ATA streaming to help reduce frame loss, improve overall video playback, and increase the number of hard drive bays supported within a NVR. Help make your surveillance solution future-ready knowing that WD Purple™ drives are ready for ultra high definition cameras.

Premium Protection
Designed with tarnish-resistant components, this WD Purple drive offers premium protection in harsh environments where surveillance systems may be installed.

IntelliSeek
Western Digital’s unique IntelliSeek technology proactively calculates an optimum seek speed to eliminate hasty movement of the actuator that produces noise and requires power, which is common in other drives. With IntelliSeek, the actuator’s movement is controlled so the head reaches the next target sector just in time to read the next piece of information, rather than rapidly accelerating and waiting for the drive rotation to catch up. This smooth motion reduces power usage by more than 60 percent compared with standard drives, as well as quiets seek operation and lowers vibration.

Dynamic Fly Height Control
This feature is designed to compensate for head/media separation changes due to temperature and altitude. It adds video quality margins across temperature and altitude changes.

No Touch Ramp Load Technology
Parks the recording heads off the disk surface during spin up, spin down and when
the drive is off. This ensures the recording head never touches the disk surface
resulting in improved long term reliability due to less head wear, and improved nonoperational shock tolerance.

Dual Actuator Technology
A head positioning system with dual-stage actuators that improves positioning accuracy over the data track(s). The primary stage provides course displacement; the secondary stage uses piezoelectric motion to fine tune the head positioning to a higher degree of precision.

Advanced Format (AF)
Advanced Format (AF) technology is adopted by Western Digital and other drive manufacturers as one of multiple ways to continue growing hard drive capacities. AF is a more efficient media format that enables increased areal densities. In AF, each physical sector is composed of eight 512 byte logical sectors, totaling 4096 bytes.

Native Command Queuing (NCQ )
These drives support Native Command Queuing. NCQ is a true Enterprise feature for
environments such as database, Web servers, and e-mail servers.
Performance of a random I/O workload can be improved through intelligent reordering of the I/O requests so they read/write to and from the nearest available sectors and minimize the need for additional disk revolutions or head actuator movement. This improvement is achieved though Native Command Queuing (NCQ).

NCQ allows the drive to re-order read commands, thereby increasing random read IOPs. Additional NCQ features that can prove beneficial include a Write Cache disabled IOP increase and a queuing implementation built upon an existing, highly automated cache architecture. Queued reads in NCQ leverage the same re- ordering schemes used for write caching. The firmware design maintains the “order” of overlapping/colliding queued commands. NCQ is designed to excel in multithreaded environments with high random I/O loads.

Pre-emptive Wear Leveling (PWL)
This Western Digital feature provides a solution for protecting the recording media against mechanical wear. In cases where the drive is so busy with incoming commands that it is forced to stay in a same cylinder position for a long time, the PWL control engine initiates forced seeks so that disk lubricant maintains an even distribution and does not become depleted. This feature ensures reliability for applications that perform a high incidence of read/write operations at the same physical location on the disk.

S.M.A.R.T. Command Transport (SCT)
The SCT Command Transport feature set provides a method for a host to send commands and data to a device and for a device to send data and status to a host using log pages. Standard ATA commands may be interspersed with SCT commands, but SCT commands cannot be nested. SCT commands that do not require

subsequent data transfer operation are not interspersed with any ATA commands or
each other.
The SCT Command Transport feature set provides a method for a host to send commands and data to a device and for a device to send data and status to a host using log pages. This capability is used to pass commands through a driver interface or a bridge where new or unknown commands may be filtered and not passed to the drive. SCT is also used for issuing commands that require more than 8 parameter bytes. ATA8-ACS provides detailed information on the usage and capabilities of SCT. The SCT feature set includes the following commands:

• Write Same
• Temperature Reporting
  

Write Same
The Write Same command allows the host to erase the media, or write a pattern repeatedly across the media, with a minimum of data transfer from the host. The host can clear the entire media to zeros or a specific pattern by sending this command with the pattern as a parameter—no data transfer is necessary. Write Same can write the entire media, or just a portion of the media. The host can monitor the progress of the Write Same by issuing SCT Status requests. This frees the host system to do other tasks while the media is being cleared.

Temperature Reporting
The SCT Temperature Reporting (SCT TR) feature allows a host system to access temperature information in the drive. The S.M.A.R.T. temperature value is reported within ±3°C of the base casting temperature. This information can been used to control fans or adjust the usage of various system components to keep the drive within its normal operating temperature. Applications include Enterprise, Laptop, Desktop and Consumer Electronics. SCT TR reports the maximum and minimum sustained operating limits, warning level limits, and drive damage limits. In addition to reporting the limits, SCT TR returns the current drive temperature (a temperature history which the host can use to predict heating or cooling trends) and the maximum temperature achieved during the lifetime of the drive as well as the highest temperature achieved since the power was applied to the drive. Detailed information on this capability can be found in ATA8-ACS.

World Wide Name (WWN)
It has become a critical requirement that hard drives be uniquely identified by computer systems. This allows a drive to maintain its identity as it is transported from system to system or placed on a network. IEEE has defined a format for serial numbers that is widely recognized in the computing industry by adding World Wide Name (WWN) to ATA/ATAPI-7 in 2002.

The World Wide Name (WWN) defined in ATA/ATAPI-7 is a modification of the IEEE Extended Unique Identifier 64 bit standard (EUI-64) and is comprised of three major components: naming authority, organizationally unique identifier (OUI) and serial number. Western Digital’s OUI is 0014EEh.

Reliability Features Set

Data Lifeguard™
Representing Western Digital’s ongoing commitment to data protection, Data Lifeguard includes features that enhance the drives ability to prevent data loss. Data Lifeguard data protection features include thermal management, an environmental protection system, and embedded error detection and repair features that automatically detect, isolate, and repair problem areas that may develop over the extended use of the hard drive. With these enhanced data reliability features, the drive can perform more accurate monitoring, error repair, and deliver exceptional data security.

All Western Digital drives are defect-free and low-level formatted at the factory. After prolonged use, any drive, including a Western Digital drive, may develop defects. Download the latest versions of the Data Lifeguard Diagnostic and Data Lifeguard Tools programs at support.wdc.com. 3.13.2 Thermal Management The drive is designed with Thermal Management features for high reliability.

State-of-the-Art Mechanical Design—Mechanical design is optimized to reduce the drive’s temperature. State-of-the-art thermal dissipation and windage design is employed.

CAUTION: As with all format utilities, some options in the Data Lifeguard Diagnostics utility will overwrite user data.

• Closed Loop Servo Management— Thermal management monitors the drive temperature and can control servo operations to maintain a stable operating temperature under high temperature conditions. This is a closed loop servo and thermal control system.
• S.M.A.R.T. HDA T emperature Attribute—The S.M.A.R.T. HDA Temperature Attribute is supported.
• The S.M.A.R.T. temperature value is reported within ±3°C of the base casting temperature.
• Ducted Airflow— Provides protection to the Read/Write element from heated air.

Internal Environmental Protection System
This dual filter system protects the inside environment of the drive from contamination. System features include:

• Dual Filtration System to ensure fast clean-up times
• Directed airflow to maximize mechanical cooling
• Increase casting surface area to maximize cooling
• Ducted air flow to protect Read Rite elements from heated air
• Enhanced heat dissipation

Recoverable Errors
A sector marked for repair is written back to the same location. The sector is then
read several times to be sure that it was written correctly and that there is no media
damage at its location (sector test). If the sector does not easily and consistently read
correctly, the sector is then relocated with original data.

Self Test
Self Test is a quick way to determine the operation status of a drive. The following Self Tests are supported:

• Quick Test: Completes in less than two minutes.
• Extended Test: Tests all the critical subsystems of the drive.
• Conveyance Test: Quickly identifies issues caused by handling damage.
• Selective Test: Scans host-defined sections of the drive.
  The test may be run to completion or be performed as a background task as the drive processes other commands from the host. The host may then poll the drive for runtime status and test results. Since the test is embedded in the drive’s firmware, it is always available, requires no installation and can be faster and more effective than a software-based drive test.
  

ATA Error Logging
ATA Error Logging provides an industry standard means to record error events and supporting information that is then accessible by the host. The event record includes the exact command that caused the failure, the response of the drive, the time of the event and information about the four commands immediately prior to the errant command. Error Logging can reliably and quickly determine whether a system problem is the result of a hard drive failure or other component malfunction. Error Logging retains total error count for the life of the drive and complete records for the last five errors.

Defect Management
Every Western Digital drive undergoes factory-level intelligent burn in, which thoroughly tests for and maps out defective sectors on the media before the drive leaves the manufacturing facility. Following the factory tests, a primary defect list is created. The list contains the cylinder, head, and sector numbers for all defects.

Defects managed at the factory are sector slipped. Grown defects that can occur in the field are mapped out by relocation to spare sectors on the inner cylinders of the drive.

Automatic Defect Retirement
The automatic defect retirement feature automatically maps out defective sectors
while reading or writing. If a defective sector appears, the drive finds a spare sector.
The following item is specific to automatic defect retirement on writes (write autorelocation):

• Data is always written to disk (using automatic defect retirement if required) and no error is reported. The following item is specific to automatic defect retirement on reads (read autorelocation):
• When host retries are enabled, the drive will internally flag any unrecoverable errors (DAMNF or ECC). This flagging allows subsequent write commands to this location to relocate the sector only if the sector test fails.

Error Recovery Process
The drive has five means of error recovery:

• ECC On-the-Fly
• Preamp Thermal Asperity (TA) Compensation
• Read/Write Retry Procedure
• Extended Read Retry Procedure
  
  ECC On-the-Fly – If an ECC error occurs, the drive attempts to correct it on-the-fly without retries. Data can be corrected in this manner without performance penalty. The details of the correction algorithm appear in the next section.

Preamp Thermal Asperity Compensation – A Thermal Asperity (TA) is a baseline shift in the readback signal due to heating of the magnetoresistive stripe on the head as a result of physical contact with the disk or a particle. The preamp circuit has the ability to detect and compensate for thermal asperities. When an error cannot be corrected by ECC On-the-Fly, another retry is performed, where the preamp with its thermal asperity detection feature determines if the error is due to a thermal asperity. Once the preamp determines that the error is due to thermal asperity, preamp compensation is enabled. If preamp compensation alone is not enough to recover, then the channel performs a series of TA-specific recoveries.

Read/Write Retry Procedure – This retry procedure is used by all disk controller error types. If the procedure succeeds in reading or writing the sector being tried, then recovery is complete and the controller continues with the command. Each retry operation also checks for servo errors. The procedure ends when error recovery is achieved or when all possible retries have been attempted.

Extended Read Retry Procedure – This retry procedure tries combinations of positive/negative track offsets and data DAC manipulations to recover the data. This retry procedure applies only to read data recovery. The Read/Write Retry procedure performs the actual retry operation.

When an extended retry operation is successful, the controller continues with the command. The controller clears any changes in track offset or data DAC settings before the command continues.

Hot Plug Support
SATA supports hot plugging (also known as “hot swapping”), the ability to swap out a failed hard drive without having to power down the system or reboot. This capability contributes to both data availability and serviceability without any associated downtime, making it a critical feature for extending SATA into enterprise applications.

These Western Digital hard drives support hot plugging only in systems where a SATA hard drive storage backplane is used.

The Serial ATA revision 2.5 specification requires staggered pins for both the hard drive and drive receptacles. Staggered pins mate the power signals in the appropriate sequences required for powering up the hot plugged device. These pins are also specified to handle in excess of the maximum allowed inrush current that occurs during drive insertion. SATA-compliant devices thus need no further modification to be hot pluggable and provide the necessary building blocks for a robust hot plug solution, which typically includes:

• Device detection even with power downed receptacles (typical of server
  applications).

• Pre-charging resistors to passively limit inrush current during drive insertion.

• Hot plug controllers to actively limit inrush current during drive insertion.
  

Active LED Status
The drive supports external LED requirements. It provides an activity LED pin which is ON during command execution and OFF otherwise. The drive strength of this open drain drive active signal is that it can sink 12mA to 0.4V Max. It is 5V tolerant, meaning that the external LED may be driven from +5V or +3.3V so long as the Host system provides a series resistor to limit the LED current to the lower of 12mA or the rated operating current of the LED. As an example with +5V and a 2 volt forward drop across a 10mA LED, a 300 Ohm 5% 1/16W resistor would be suitable. In the case of a 3.3V supply for the same LED, the resistor would be 130 Ohm 5% 1/16W.

The pin corresponding to P11 shall be used for Active LED (see Section 2.7 Connectors and Cables on page 17).

Fluid Dynamic Bearings (FDB)
Bearing design that incorporates a layer of high-viscosity lubricant instead of ball bearings in the hard drive spindle motor. As an alternative to conventional ball bearing technology, FDB designs provide increased non- operational shock resistance, speed control, and improved acoustics.

Staggered Spinup and Activity Indication (SATA Power Pin 11)
Note: This feature is available for specific OEM configurations. SATA device power connector pin 11 is defined as a means by the host to DISABLE staggered spinup and it may also be used by the device to provide the host with an activity indication. According to the SATA specification, “Staggered Spin-up Disable and Activity Signal shall not be enabled at the same time.”

Power Management
This drive supports the ATA power management commands that lower the average power consumption of the hard drives. For example, to take advantage of the lower power consumption modes of the drive, an energy efficient host system could implement a power management scheme that issues a Standby Immediate command when a host resident disk inactivity timer expires. The Standby Immediate command causes the drive to spin down and enter a low-power mode. Subsequent disk access commands would cause the drive to spin up and execute the new command. To avoid excessive wear on the drive due to the starting and stopping of the HDA, set the host’s disk inactivity timer to no shorter than ten minutes.

The drive also supports the SATA power management feature that lowers the average power consumption of the SATA interface.

Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.)

S.M.A.R.T. helps you monitor a drive’s internal status through diagnostic commands at the host level.

The drive monitors Read Error Rate, Start/Stop Count, Re-allocated Sector Count, Seek Error Rate, Power-on Hours Count, Spin-up Retry Count, Drive Calibration Retry   Count, Drive Power Cycle Count, Offline Scan Uncorrectable Sector Count, Ultra ATA CRC Error Rate, Multi-zone Error Rate, Spin-up Time, Relocation Event Count, and Current Pending Sector Count. The hard drive updates and stores these attributes in the reserved area of the disk. The drive also stores a set of attribute thresholds that correspond to the calculated attribute values. Each attribute threshold indicates the point at which its corresponding attribute value achieves a negative reliability status.

Security Mode
The Security Mode feature set allows the user to create a device lock password that prevents unauthorized hard drive access even if the drive is removed from the computer. This feature varies by drive configuration and may not be available on all configurations.

Master and User Passwords

The manufacturer/dealer can set a master password using the Security Set Password command, without enabling the device lock function. The user password should be given or changed by a system user.

Master Password Identifier is supported and set to a default value of 00FE. If a Master Password is set via a Security Set Password Command, a valid Master Password Revision code value of 0001h – FFFEh must be used. A Master Password Identifier of 0000h is ignored.

When the master password is set, the drive does not enable the device lock function. When the user password is set, the drive enables the device lock function, and the drive is locked after the next power on reset or hard reset.

Security Levels
High – If High level security is set and the user password is forgotten, the master password can be used to unlock the drive and access the data. Maximum – If Maximum level security is set and the user password is forgotten, data access is impossible. Only the master password with a Security Erase Unit command can unlock the drive when the device lock function is enabled and the user password has been forgotten. When the Security Erase Unit command is used to unlock the drive, all user data is erased.

ATA COMMAND SET

Host Interface Commands
ATA Commands Set (ACS)
Table 4-1 lists the hexadecimal codes specific to each ACS command supported by these hard drives. Refer to the ACS specification for full details on each command.

SCT Commands
SCT commands provide capabilities for commands that do not fit the ATA command delivery model. Some SCT commands report completion when the command begins execution. Execution progress for these commands may be checked by requesting SCT status. For instance, the host can track the progress of a Write Same command    by issuing a status request once per minute. See ACS for a full description of SCT.
Table 4-2. SCT Action Codes

S.M.A.R.T. (B0h)
The S.M.A.R.T. command provides access to attribute values, S.M.A.R.T. status, and other S.M.A.R.T. information. These commands can be used for logging and reporting purposes, and for accommodating special user needs.

Prior to writing the S.M.A.R.T. command to the Command Register, the host must write key values into the LBA Mid and LBA High Registers (4Fh, C2h) or the command will be aborted and an error will be reported.

The S.M.A.R.T. command has several sub-commands that are selectable via the Features Register when the host issues the S.M.A.R.T. command. To select a subcommand, the host must write the appropriate sub-command code to the Features Register before issuing the S.M.A.R.T. command. The sub-commands and their respective codes are listed below. For more detailed information on executing    S.M.A.R.T. commands, see the ACS specification.

Read Data Sub-Command
This command returns a sector of data with the drives S.M.A.R.T. data structure.

scan not run X2h scan complete X4h scan suspended X5h scan aborted
363| XX| Self-Test execution status byte.00h         The previous self-test routine completed without error or no self-test has ever been run01h The self-test routine was aborted by the host02h         The self-test routine was interrupted by the host with a hard or soft reset03h         A fatal error or unknown test error occurred while the device was executing its self-test routine. The device was unable to complete the self-test routine.04h The previous self-test completed having a test element that failed. The test element that failed is not known.05h         The previous self-test completed having a test element that failed. The electrical element of the test failed.06h  The previous self-test completed having a test element that failed. The servo (and/or seek) test element of the test failed.07h  The previous self-test completed having a test element that failed. The read element of the test failed.08h         The previous self-test completed having a test element that failed. The element damage is suspected to be caused by handling.09-               Reserved 0Eh0Fh         Self-test routine in progress
364 – 365| XX| Total time in seconds to complete offline data collection activity
366| XX| Reserved
367| 07Bh| Offline data collection capability. Bits are as follows:0        1 = Offline Immediate Command supported1        1 = Auto Offline enable\disable command supported2        0 = Offline will suspend on and will resume after host command3        1 = Offline read scan implemented4        1 = DST Short and Extended tests supported 6-7    0 – Reserved
368 – 369| 0003h| S.M.A.R.T. Capability. Bits are as follows:0        1 = The device saves SMART data prior to going into a power saving mode1        1 = Device complies with SMART data autosave after an event2-15     Reserved
370| 01h| Error logging capability. Bits are as follows:0        1 = Error logging supported1        Reserved
371| XX| Reserved
372| XX| Short self-test routine completion time in minutes
373| XX| Extended self-test routine completion time in minutes
375 – 510| XX| Reserved
511| XX| Checksum

Supported Attributes
The drive supports the following attributes.

Attribute| Attribute ID Number| Pre-Failure/Advisory Bit (Status Flags bit 0) 1
---|---|---
Read Error Rate| 1| Pre-Failure
Spin-up Time| 3| Pre-Failure
Start/Stop Count| 4| Advisory
Re-allocated Sector Count| 5| Pre-Failure
Seek Error Rate| 7| Advisory
Power-on Hours Count| 9| Advisory
Spin-up Retry Count| 10| Advisory
Drive Calibration Retry Count| 11| Advisory
Drive Power Cycle Count| 12| Advisory
Emergency Retract Cycles| 192| Advisory
Load/Unload Cycles| 193| Advisory
HDA Temperature| 194| Advisory
Relocation Event Count| 196| Advisory
Current Pending Sector Count| 197| Advisory
Offline Scan Uncorrectable Sector Count| 198| Advisory
Ultra ATA CRC Error Rate| 199| Advisory
Multi-zone Error Rate| 200| Advisory

Status bits are typical but may vary.

Attributes that use the Pre-Failure/Advisory Bit Set can predict potential future degrading or faulty conditions. Attributes with the Failure/Advisory Bit Clear are used for informational purposes only, they do not indicate impending drive failure. The S.M.A.R.T. data saving process is a background task. After a pre-determined idle period, the self-monitoring data is automatically saved to the disk.

Read Log Sector
There are several logs that can be read with the S.M.A.R.T. Read Log Sector subcommand. The LBA Low Register indicates the log sector to be returned.

Log Address| Log Name| Feature Set| R/W| Access
---|---|---|---|---
00h| Log directory| ExtLog| RO| GPL, SL
01h| Summary Log| SMART| RO| SL
02h| Comprehensive SMART error log| SMART| RO| SL
03h| Extended Comprehensive SMART error log| ExtLog| RO| GPL
04h| Device Statistics| N/A| RO| GPL, SL
05h| Reserved| Reserved| Reserved|
06h| SMART self-test log| SMART| RO| SL
07h| Extended SMART self-test log| ExtLog| RO| GPL
08h| Reserved| Reserved| Reserved|
09H| Selective self-test log| SMART| R/W| SL
0Ah-0Fh| Reserved| N/A| Reserved|
10h| NCQ Command Error| NCQ| RO| GPL
11h| SATA PHY Counters| ExtLog| RO| GPL
12h-17h| Reserved for Serial ATA| N/A| Reserved|
18h-1Fh| Reserved| N/A| Reserved|
20h| Obsolete| | |
23h| Obsolete| | |
24h-7Fh| Reserved| N/A| Reserved|
80h-9Fh| Host vendor specific| SMART / ExtLog| R/W| GPL, SL
A0h-BFh| Device vendor specific| SMART / ExtLog| VS| GPL, SL
C0h-EFh| Reserved| Reserved| Reserved|
E0h| SCT Command/Status| N/A| R/W| GPL, SL
E1h| SCT Data Transfer| | | GPL, SL
E2h-FFh| Reserved| Reserved| Reserved|
RO – Read OnlyR/W – Read / WriteSMART – Supported by B0h command code. ExtLog – Supported by 2Fh/3Fh command code. VS – Vendor SpecificSCT – SMART Command Transport

Identify Device (ECh)
The Identify Device command transfers 512 bytes of data that specify the drives parameters. Table 4-6 lists the parameters read by the host.

Table 4-6. Identify Device Command

nnnnnnn”
47| READ/WRITE MULTIPLE supportBit 15-8: 80hBit 7-0: 00h: Reserved01h-FFh = Maximum number of logical sectors that shall be transferred per DRQ data block on READ/WRITE MULTIPLE commands| 8010h
48| Trusted Computing feature set optionsBit 15: Shall be cleared to zero Bit 14: Shall be set to oneBit 13-1: Reserved for the Trusted Computing Group Bit 0: If set, Trusted Computing feature set is supported| 4000h
____ 49| CapabilitiesBit 15-14: Reserved for the IDENTIFY PACKET DEVICE command.Bit 13: If set, Standby timer values as specified in this standard are supported.0 = Standby timer values shall be managed by the deviceBit 12: Reserved for the IDENTIFY PACKET DEVICE commandBit 11: If set, IORDY supportedBit 10: If set, IORDY may be disabled Bit 9: If set, LBA supportedBit 8: If set, DMA supported Bit 7-2: ReservedBit 1: Current Long Physical Alignment Setting| ____ 2F00h
50| CapabilitiesBit 15: Shall be cleared to zero. Bit 14: Shall be set to one.Bit 13-2: Reserved.Bit 1: ObsoleteBit 0: Shall be set to one to indicate a device specific Standby timer value minimum| 4001h
51-52| Obsolete| 0
53| Additional Words ValidBit 8-15: Free-fall Control Sensitivity00h = Vendor’s recommended setting01h-FFh = Sensitivity level. A larger number is a more sensitive setting.Bit 7-3: ReservedBit 2: If set, the fields reported in word 88 are valid Bit 1: If set, the fields reported in words 70-64 are valid Bit 0: Obsolete| 0006h

ATA Command Set

Table 4-6. Identify Device Command (Continued)

supported Bit 14: 1= The OVERWRITE EXT command is supported Bit 13: 1=The CRYPTO Scramble EXT command is supportedBit 12: 1=The Sanitize feature set is supported Bit 9-11 ReservedBit 8: 1=Multiple local sector setting is validBit 0-7: Current setting for number of logical sectors that shall be transferred per DRQ data block on READ/ WRITE Multiple commands| __ XXh
60-61| Total number of user addressable logical sectors for 28 bit commands (DWord)| 0FFFFFFFh
62| Obsolete| 0
63| Multi-Word DMA Transfer Mode SupportedBit 15-11: ReservedBit 10: If set, Multiword DMA mode 2 is selected Bit 9: If set, Multiword DMA mode 1 is selected Bit 8: If set, Multiword DMA mode 0 is selected Bit 7-3: ReservedBit 2: If set, Multiword DMA mode 2 Bit 1: If set, Multiword DMA mode 1 Bit 0: If set, Multiword DMA mode 0| XX07h
64| Advanced PIO Modes SupportedBits 0-7: PIO Modes supported| 0003h
65| Min. Multi-Word DMA Transfer Cycle Time (ns)Bit 15-0: Cycle time in nanoseconds| 0078h
66| Manufacturer Recommended Multi-Word DMA Cycle TimeBit 15-0: Cycle time in nanoseconds| 0078h
67| Min. PIO Transfer Cycle Time without flow controlBit 15-0: Cycle time in nanoseconds| 0078h
68| Min. PIO Transfer Cycle Time with IORDY flow controlBit 15-0: Cycle time in nanoseconds| 0078h
__ 69| Additional SupportedBit 15: If set, CFast Specification SupportBit 14: If set, Deterministic data in trimmed LBA range(s) is supportedBit 13: If set, Long Physical Sector Alignment Error Reporting Control is supportedBit 12: If set, DEVICE CONFIGURATION IDENTIFY DMAand DEVICE CONFIGURATION SET DMA are supported Bit 11: If set, READ BUFFER DMA is supportedBit 10: If set, WRITE BUFFER DMA is supportedBit 9: If set, SET MAX SET PASSWORD DMA and SETMAX UNLOCK DMA are supportedBit 8: If set, DOWNLOAD MICROCODEBit 6: If set, Optional ATA device 28-bit commands supported ODE DMA is supportedBit 7: If set, Reserved for IEEE 1667Bit 5: If set, Trimmed LBA range(s) returning zeroed data is supportedBit 4: If set, Device Encrypts All User DataBit 3: If set, Extended Number of User Addressable Sectors is supportedBit 2-0: Reserved| __ 4D2Ah
70| Reserved| 0
71-74| Reserved for the Identify Packet Device command| 0
75| Queue DepthBit 15-5: ReservedBit 4-0: Maximum queue depth – 1| 001Fh

Table 4-6. Identify Device Command (Continued)

Shall be set to 1Bit 13: If set, Flush Cache EXT command supported Bit 12: If set, mandatory Flush Cache command supportedBit 11: If set, DCO feature set supportedBit 10: If set, 48-bit Address Feature Set supported Bit 9: Not supportedBit 8: If set, Set Max Security Extension supported Bit 7: ReservedBit 6: If set, Set Features subcommand required to spin-up after power-upBit 5: If set, Power-Up In Standby feature set supportedBit 4: ObsoleteBit 3: If set, Advanced Power Management feature set supportedBit 2: If set, CFA feature set supportedBit 1: If set, Read/Write DMA Queued supportedBit 0: If set, Download Microcode command supported| ____ 7401h
____ 84| Command and feature sets supportedBit 15: Shall be cleared to zero Bit 14: Shall be set to oneBit 13: If set, Idle Immediate with Unload Feature supportedBit 12: ReservedBit 11: ReservedBit 9-10: ObsoleteBit 8: If set, 64-bit World wide name supported Bit 7: If set, Write DMA Queued FUA EXT command supportedBit 6: If set, Write DMA FUA EXT and Write Multiple FUA EXT commands supportedBit 5: If set, General Purpose Logging feature set supportedBit 4: If set, Streaming Feature Set supported Bit 3: ObsoleteBit 2: If set, Media serial number supported Bit 1: If set, SMART Self-Test supportedBit 0: If set, SMART Error Logging supported| ____ 6123h
____ 85| Command and feature sets supported or enabledBit 15: ObsoleteBit 14: If set, NOP command supportedBit 13: If set, Read Buffer command supported Bit 12: If set, Write Buffer command supported Bit 11: ObsoleteBit 10: If set, Host Protected Area has been established Bit 9: If set, DEVICE RESET command supportedBit 8: If set, SERVICE interrupt enabled Bit 7: If set, Release Interrupt enabled Bit 6: If set, Read look-ahead enabled Bit 5: If set, Volatile Write cache enabledBit 4: Cleared to 0 to indicate that the PACKET feature set is not supportedBit 3: Set to 1 to indicate that the Mandatory Power Management feature set is supportedBit 2: ObsoleteBit 1: If set, Security Feature Set enabled Bit 0: If set, SMART Feature Set enabled| ____ 0111 0X0X XXX0 10XXb

Table 4-6. Identify Device Command (Continued)

set, Words 119-120 are valid Bit 14: ReservedBit 13: If set, Flush Cache EXT command supported Bit 12: If set, Flush Cache command supportedBit 11: If set, Device Configuration Overlay supported Bit 10: If set, 48-bit Address Feature Set supported Bit 9: Not supportedBit 8: If set, Set Max Security Extension enabled by Set Max Set PasswordBit 7: ReservedBit 6: If set, Set Features subcommand required to spin-up after power-upBit 5: If set, Power-Up In Standby feature set enabled Bit 4: ObsoleteBit 3: If set, Advanced Power Management feature set enabledBit 2: If set, CFA Feature Set enabledBit 1: If set, Read/Write DMA Queued command supportedBit 0: If set, Download Microcode command supported| ____ B401h
____ 87| Commands and feature sets supported or enabledBit 15: Shall be cleared to zero Bit 14: Shall be set to 1Bit 13: If set, Idle Immediate with Unload Feature supportedBit 12: ReservedBit 11: ReservedBit 9-10: ObsoleteBit 8: If set, 64-bit World wide name supported Bit 7: If set, Write DMA Queued FUA EXT command supportedBit 6: If set, Write DMA FUA EXT and Write Multiple FUA EXT commands supportedBit 5: If set, General Purpose Logging Feature Set supportedBit 4: ObsoleteBit 3: If set, Media Card Pass Through Command feature set supportedBit 2: If set, Media serial number is valid Bit 1: If set, SMART Self-Test supportedBit 0: If set, SMART Error Logging supported| ____ 6123h
__ 88| Ultra DMA modesBit 15: ReservedBit 14: If set, Ultra DMA Mode 6 is selected Bit 13: If set, Ultra DMA Mode 5 is selected Bit 12: If set, Ultra DMA Mode 4 is selected Bit 11: If set, Ultra DMA Mode 3 is selected Bit 10: If set, Ultra DMA Mode 2 is selected Bit 9: If set, Ultra DMA Mode 1 is selected Bit 8: If set, Ultra DMA Mode 0 is selected Bit 7: ReservedBit 6: Ultra DMA mode 6 supported Bit 5: Ultra DMA mode 5 supported Bit 4: Ultra DMA mode 4 supported Bit 3: Ultra DMA mode 3 supported Bit 2: Ultra DMA mode 2 supported Bit 1: Ultra DMA mode 1 supported Bit 0: Ultra DMA mode 0 supported| __ XXXX XXXX 0111 1111b
89| Bit 15-8: ReservedBit 7-0: Time required for Normal Erase mode SECURITY ERASE UNIT command| xxh
90| Bit 15-8: ReservedBit 7-0: Time required for Normal Erase mode SECURITY ERASE UNIT command| xxh
91| Current APM level value| XXXXh
92| Master Password Identifier| XXXXh
93| Hardware reset result| 0
94| Obsolete| 0
95| Stream Minimum Request Size| 0
96| Stream Transfer Time – DMA| 0

Table 4-6. Identify Device Command (Continued)

0
161-167| Reserved for the CompactFlash™ Association| 0
168| Device Nominal Form FactorBit 15-4: ReservedBit 3-0: Device Nominal Form Factor| 0002h
169| Data Set Management CommandBit 15-1: ReservedBit 0: if set, the Trim bit in the Data Set Management command supported| 0001h
170-173| Additional Product Identifier| 0
174-175| Reserved| 0
176-205| Current Media Serial number| 0
____ 206| SCT Command TransportBit 15-12: Vendor Specific Bit 11-6: ReservedBit 5: If set, SCT Data tables command supportedBit 4: If set, SCT Features Control command supported Bit 3: If set, SCT Error Recovery Control command supportedBit 2: If set, SCT Write Same command supported Bit 1: If set, ObsoleteBit 0: If set, SCT Command Transport supported| __ 3039h
207-208| Reserved| 0
209| Alignment of logical blocks within a physical blockBit 15: Shall be cleared to zero Bit 14: Shall be set to oneBits 13-0: Logical sector offset within the first physical sector where the first logical sector is placed.| 4000h
210-211| Write-Read-Verify Sector Count Mode 3| 0
212-213| Write-Read-Verify Sector Count Mode 2| 0
214| NV Cache CapabilitiesBit 15-12: NV Cache feature set versionBit 11-8: NV Cache Power Mode feature set version Bit 7-5: ReservedBit 4: If set, NV Cache feature set enable Bit 3-2: ReservedBit 1: If set, NV Cache Power Mode feature set enable Bit 0: if set, NV Cache Power Mode feature set supported| 0
215-216| NV Cache Size in Logical Blocks| 0
217| Nominal media rotation rate| 1518h
218| Reserved| 0
219| NV Cache OptionsBit 15-8: ReservedBit 7-0: Device Estimate Time to spin up in seconds| 0
220| Bit 15-8: ReservedBit 7-0: Write-Read-Verify feature set current mode| 0
221| Reserved| 0
__ 222| Transport major version number0000h or FFFFh=device does not report version Bit 12-15: Transport Type (0h=Parallel 1h=Serial 2h- Fh=Reserved)Bit 6-11: Reserved (Parallel, Serial) Bit 5: Reserved     SATA Rev. 3.0Bit 4: Reserved     SATA Rev. 2.6Bit 3: Reserved     SATA Rev. 2.5Bit 2: Reserved     SATA II: Extensions Bit 1: ATA/ATAPI-7  SATA 1.0aBit 0: ATA8-APT ATA8-AST| __ 107Eh
223| Transport minor version number| 0

Table 4-6. Identify Device Command (Continued)

(11,721,045,168)WD41HKVS (7,814,037,168)
234| Minimum number of 512-byte data blocks per DOWNLOAD MICROCODE command for mode 03h| 0001h
235| Maximum number of 512-byte data blocks per DOWNLOAD MICROCODE command for mode 03h| 1000h
236-254| Reserved| 0
255| Integrity WordBit 15-8: ChecksumBit 7-0: Signature| XXA5h

Set Features (EFh)

The Set Features command enables or disables the features listed in Table 4-7.

optimization06h-Software Settings Preservation
Disable use of Serial ATA Feature| 90h| 02h-DMA Setup FIS Auto-Activate optimization06h-Software Settings Preservation

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References

• 2001.no in parked
• Openwall - bringing security into open computing environments
• Licenses
• A Fast and Easy to Use AES Library - CodeProject
• Embedded Template Library
• High-Performance SSDs, HDDs, USB Drives, & Memory Cards | Western Digital
• GitHub - ETLCPP/etl: Embedded Template Library
• GitHub - uTensor/uTensor: TinyML AI inference library
• Manual-Hub.com – Free PDF manuals!
• Source code snippets and frameworks placed in the public domain [Openwall Community Wiki]

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