Lenovo 4XB7A80340 ThinkSystem Mixed Use SAS 24Gb SSDs User Guide

4XB7A80340 ThinkSystem Mixed Use SAS 24Gb SSDs
User Guide

4XB7A80340 ThinkSystem Mixed Use SAS 24Gb SSDs

Figure 1. ThinkSystem PM1655 Mixed Use SAS 24Gb SSDs

ThinkSystem PM1655 Mixed Use SAS 24Gb SSDs
Product Guide
The ThinkSystem PM1655 Mixed Use SAS 24Gb SSDs are next-generation high- performance 24Gb SAS self-encrypting SSDs (SEDs) suitable for a wide range of applications of running on ThinkSystem servers.
The drives are available in capacities of up to 6.4 TB.
The PM1655 SSDs are the follow-on to the PM1645a SSDs and offer improved performance.
Did you know?
Unlike 6 Gb/s SATA drives, the 24 Gb/s SAS interface on these drives supports full duplex data transfer for higher performance, and enterprise-level error recovery for better availability. By combining the enhanced reliability of Samsung  NAND flash memory silicon with NAND Flash management technologies, PM1655 SSDs deliver the extended endurance of up to 3 drive writes per day (DWPD) for 5 years, which is suitable for many enterprise applications.
Self-encrypting drives (SEDs) provide benefits by encrypting data on-the-fly at the drive level with no performance impact, by providing instant secure erasure thereby making the data no longer readable, and by enabling auto- locking to  secure active data if a drive is misplaced or stolen from a system while in use.
These features are essential for many businesses, especially those storing customer data.
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ThinkSystem PM1655 Mixed Use SAS 24Gb SSDs

Part number information

The following tables list the information for ordering part numbers and feature codes.
Table 1. Ordering part numbers and feature codes

MZILG800HCHQ-V7
4XB7A80341| BNW9| ThinkSystem 2.5″ PM1655 1.6TB Mixed Use SAS 24Gb HS SSD| MZILG1T6HCJR-V7
4XB7A80342| BNW6| ThinkSystem 2.5″ PM1655 3.2TB Mixed Use SAS 24Gb HS SSD| MZILG3T2HCLS-V7
4XB7A80343| BP3K| ThinkSystem 2.5″ PM1655 6.4TB Mixed Use SAS 24Gb HS SSD| MZILG6T4HBLA-V7
3.5-inch hot-swap drives|
4XB7A80344| BNW7| ThinkSystem 3.5″ PM1655 800GB Mixed Use SAS 24Gb HS SSD| MZILG800HCHQ-V7
4XB7A80345| BNWA| ThinkSystem 3.5″ PM1655 1.6TB Mixed Use SAS 24Gb HS SSD| MZILG1T6HCJR-V7
4XB7A80346| BNWB| ThinkSystem 3.5″ PM1655 3.2TB Mixed Use SAS 24Gb HS SSD| MZILG3T2HCLS-V7
4XB7A80347| BP3G| ThinkSystem 3.5″ PM1655 6.4TB Mixed Use SAS 24Gb HS SSD| MZILG6T4HBLA-V7

The part numbers include the following items:

• One solid-state drive with a hot-swap tray
• Documentation flyer

Features

The ThinkSystem PM1655 Mixed Use SAS 24Gb SSDs have the following features:

• Server-grade SSD suitable for mixed read-write-intensive workloads
• Features Samsung’s latest sixth-generation, 128-layer V-NAND TLC storage technology
• Endurance of 3 drive-writes per day (DWPD)
• 2.5-inch or 3.5-inch industry standard form factor with hot-swap tray
• SAS 24 Gb/s interface
• Compliant with the Trusted Computing Group Enterprise Security Subsystem Class cryptographic standard (TCG Enterprise 1.01 )
• Protect data integrity from unexpected power loss with Samsung’s advanced power-loss protection architecture
• Supports Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T)
• End-to-end data protection
• Support 16 Initiator with Tag Command Queuing (TCQ) Command Set with a queue-depth of up to 128 commands
• Compliant with SCSI Specification (SAS-3 / SPL-3 / SBC-4 / SPC-4 / SAM-5)
• RoHS Compliant

24 Gb/s SAS support: In order to support 24 Gb/s SAS connectivity, the drive, backplane and SAS controller must all support 24 Gb/s speeds.
Read Intensive SSDs and Mixed Use SSDs have similar read and write IOPS performance, but the key difference between them is their endurance (or lifetime) — that is, how long they can perform write operations because SSDs have a  finite number of program/erase (P/E) cycles. Mixed Use SSDs have better endurance but lower cost/IOPS ratio compared to Read Intensive SSDs. SSD write endurance is typically measured by the number of program/erase (P/E) cycles  that the drive incurs over its lifetime, listed as the total bytes of written data (TBW) in the device specification.
The TBW value assigned to a solid-state device is the total bytes of written data (based on the number of P/E cycles) that a drive can be guaranteed to complete (% of remaining P/E cycles = % of remaining TBW). Reaching this limit does  not cause the drive to immediately fail. It simply denotes the maximum number of writes that can be guaranteed. A solid-state device will not fail upon reaching the specified TBW. At some point based on manufacturing variance margin,  after surpassing the TBW value, the drive will reach the end-of-life point, at which the drive will go into a read-only mode.
The benefits of drive encryption
Self-encrypting drives (SEDs) provide benefits in three main ways:

• By encrypting data on-the-fly at the drive level with no performance impact
• By providing instant secure erasure (cryptographic erasure, thereby making the data no longer readable)
• By enabling auto-locking to secure active data if a drive is misplaced or stolen from a system while in use

The following sections describe the benefits in more details.

Automatic encryption

It is vital that a company keep its data secure. With the threat of data loss due to physical theft or improper inventory practices, it is important that the data be encrypted. However, challenges with performance, scalability, and complexity have led IT departments to push back against security policies that require the use of encryption. In addition, encryption has been viewed as risky by those unfamiliar with key management, a process for ensuring a company can always  decrypt its own data. Self-encrypting drives comprehensively resolve these issues, making encryption both easy and affordable.
When the self-encrypting drive is in normal use, its owner need not maintain authentication keys (otherwise known as credentials or passwords) in order to access the data on the drive. The self-encrypting drive will encrypt data being  written to the drive and decrypt data being read from it, all without requiring an authentication key from the owner.

Drive retirement and disposal

When hard drives are retired and moved outside the physically protected data center into the hands of others, the data on those drives is put at significant risk. IT departments retire drives for a variety of reasons, including:

• Returning drives for warranty, repair, or expired lease agreements
• Removal and disposal of drives
• Repurposing drives for other storage duties

Nearly all drives eventually leave the data center and their owner’s control. Corporate data resides on such drives, and when most leave the data center, the data they contain is still readable. Even data that has been striped across many  drives in a RAID array is vulnerable to data theft because just a typical single stripe in today’s high-capacity arrays is large enough to expose for example, hundreds of names and bank account numbers.
In an effort to avoid data breaches and the ensuing customer notifications required by data privacy laws, companies use different methods to erase the data on retired drives before they leave the premises and potentially fall into the  wrong hands. Current retirement practices that are designed to make data unreadable rely on significant human involvement in the process, and are thus subject to both technical and human failure.
The drawbacks of today’s drive retirement practices include the following:

• Overwriting drive data is expensive, tying up valuable system resources for days. No notification of completion is generated by the drive, and overwriting won’t cover reallocated sectors, leaving that data exposed.
• Methods that include degaussing or physically shredding a drive are expensive. It is difficult to ensure the degauss strength is optimized for the drive type, potentially leaving readable data on the drive. Physically shredding the drive  is environmentally hazardous, and neither practice allows the drive to be returned for warranty or expired lease.
• Some companies have concluded the only way to securely retire drives is to keep them in their control, storing them indefinitely in warehouses. But this is not truly secure because a large volume of drives coupled with human involvement inevitably leads to some drives being lost or stolen.
• Professional disposal services is an expensive option and includes the cost of reconciling the services as well as internal reports and auditing. Transporting of the drives also has the potential of putting the data at risk.

Self-encrypting drives eliminate the need to overwrite, destroy, or store retired drives. When the drive is to be retired, it can be cryptographically erased, a process that is nearly instantaneous regardless of the capacity of the drive.

Instant secure erase

The self-encrypting drive provides instant data encryption key destruction via cryptographic erasure. When it is time to retire or repurpose the drive, the owner sends a command to the drive to perform a cryptographic erasure. Cryptographic erasure simply replaces the encryption key inside the encrypted drive, making it impossible to ever decrypt the data encrypted with the deleted key.
Self-encrypting drives reduce IT operating expenses by reducing asset control challenges and disposal costs. Data security with self-encrypting drives helps ensure compliance with privacy regulations without hindering IT efficiency. So called “Safe Harbor” clauses in government regulations allow companies to not have to notify customers of occurrences of data theft if that data was encrypted and therefore unreadable.
Furthermore, self-encrypting drives simplify decommissioning and preserve hardware value for returns and repurposing by:

• Eliminating the need to overwrite or destroy the drive
• Securing warranty returns and expired lease returns
• Enabling drives to be repurposed securely

Auto-locking
Insider theft or misplacement is a growing concern for businesses of all sizes; in addition, managers of branch offices and small businesses without strong physical security face greater vulnerability to external theft. Self- encrypting drives  include a feature called auto-lock mode to help secure active data against theft. Using a self-encrypting drive when auto-lock mode is enabled simply requires securing the drive with an authentication key. When secured in this manner,  the drive’s data encryption key is locked whenever the drive is powered down. In other words, the moment the self-encrypting drive is switched off or unplugged, it automatically locks down the drive’s data.
When the self-encrypting drive is then powered back on, it requires authentication before being able to unlock its encryption key and read any data on the drive, thus protecting against misplacement and theft.
While using self-encrypting drives just for the instant secure erase is an extremely efficient and effective means to help securely retire a drive, using self-encrypting drives in auto-lock mode provides even more advantages. From the  moment the drive or system is removed from the data center (with or without authorization), the drive is locked. No advance thought or action is required from the data center administrator to protect the data. This helps prevent a breach should the drive be mishandled and helps secure the data against the threat of insider or outside theft.

Technical specifications

The following tables lists the technical specifications for the ThinkSystem PM1655 Mixed Use SAS 24Gb SSDs.
Table 2. Technical specifications

Feature| 800 GB drive| 1.6 TB drive| 3.2 TB drive| 6.4 TB drive
---|---|---|---|---
Interface| 24 Gbps SAS| 24 Gbps SAS| 24 Gbps SAS| 24 Gbps SAS
Capacity| 800 GB| 1.6 TB| 3.2 TB| 6.4 TB
SED encryption| TCG Enterprise| TCG Enterprise| TCG Enterprise| TCG Enterprise
Endurance (drive writes per day for 5 years)| 3 DWPD| 3 DWPD| 3 DWPD| 3 DWPD
Endurance (total bytes written)| 4,380 TB| 8,760 TB| 17,520 TB| 35,040 TB
Data reliability (UBER)| < 1 in 1017 bits read| < 1 in 1017 bits read| < 1 in 1017 bits read| < 1 in 1017 bits read
MTBF| 2,000,000 hours| 2,000,000 hours| 2,000,000 hours| 2,000,000 hours
Performance – 24 Gb/s single-port
IOPS reads (4 KB blocks)| 420,000| 420,000| 420,000| 420,000
IOPS writes (4 KB blocks)| 120,000| 195,000| 300,000| 195,000
Sequential read rate (128 KB blocks)| 2100 MBps| 2100 MBps| 2100 MBps| 2100 MBps
Sequential write rate (128 KB blocks)| 2000 MBps| 2000 MBps| 2000 MBps| 2000 MBps
Read latency (random)| 120 µs| 120 µs| 120 µs| 130 µs
Write latency (random)| 45 µs| 45 µs| 45 µs| 45 µs
Performance – 12 Gb/s single-port
IOPS reads (4 KB blocks)| 240,000| 240,000| 240,000| 240,000
IOPS writes (4 KB blocks)| 110,000| 150,000| 210,000| 210,000
Sequential read rate (128 KB blocks)| 1100 MBps| 1100 MBps| 1100 MBps| 1100 MBps
Sequential write rate (128 KB blocks)| 1100 MBps| 1100 MBps| 1100 MBps| 1100 MBps
Read latency (random)| 120 µs| 120 µs| 120 µs| 120 µs
Write latency (random)| 40 µs| 30 µs| 30 µs| 30 µs
Environmental
Shock, non-operating| 1,500 G (Max) at 0.5 ms| 1,500 G (Max) at0.5 ms| 1,500 G (Max) at0.5 ms| 1,500 G (Max) at0.5 ms
Vibration, non-operating| 20 GRMS (20-2000Hz)| 20 GRMS (20-2000Hz)| 20 GRMS (20-2000Hz)| 20 GRMS (20-2000Hz)
Typical power (R / W)| 11.5 W / 14.7 W| 11.5 W / 14.7 W| 11.5 W / 14.7 W| 11.5 W / 14.7 W

Adapter support

The drives are supported with all ThinkSystem SAS/SATA adapters, except for:

• ThinkSystem RAID 730-8i 1GB Cache PCIe 12Gb Adapter, 7Y37A01083
• ThinkSystem RAID 730-8i 2GB Flash PCIe 12Gb Adapter, 4Y37A09722

Server support
The following tables list the ThinkSystem servers that are compatible.
Table 3. Server support (Part 1 of 3)

Table 4. Server support (Part 2 of 3)

Table 5. Server support (Part 3 of 3)

Operating system support

SAS SSDs operate transparently to users, storage systems, applications, databases, and operating systems.
Operating system support is based on the controller used to connect to the drives. Consult the controller product guide for more information:

• RAID controllers: https://lenovopress.com/servers/options/raid
• SAS HBAs: https://lenovopress.com/servers/options/hba

IBM SKLM Key Management support

To effectively manage a large deployment of SEDs in Lenovo servers, IBM Security Key Lifecycle Manager (SKLM) offers a centralized key management solution. Certain Lenovo servers support Features on Demand (Food) license upgrades that enable SKLM support.
The following table lists the part numbers and feature codes to enable SKLM support in the management processor of the server.
Table 6. FoD upgrades for SKLM support

Security Key Lifecycle Manager – FoD (United States, Canada, Asia Pacific, and Japan)
00D9998| A5U1| SKLM for System x/ThinkSystem w/SEDs – FoD per Install w/1Yr S&S
00D9999| AS6C| SKLM for System x/ThinkSystem w/SEDs – FoD per Install w/3Yr S&S
Security Key Lifecycle Manager – FoD (Latin America, Europe, Middle East, and Africa)
00FP648| A5U1| SKLM for System x/ThinkSystem w/SEDs – FoD per Install w/1Yr S&S
00FP649| AS6C| SKLM for System x/ThinkSystem w/SEDs – FoD per Install w/3Yr S&S

The IBM Security Key Lifecycle Manager software is available from Lenovo using the ordering information listed in the following table.
Table 7. IBM Security Key Lifecycle Manager licenses

SW Subscription & Support 12 Months
7S0A007HWW| IBM Security Key Lifecycle Manager For Raw Decimal Terabyte Storage Resource Value Unit License + SW Subscription & Support 12 Months
7S0A007KWW| IBM Security Key Lifecycle Manager For Raw Decimal Petabyte Storage Resource Value Unit License + SW Subscription & Support 12 Months
7S0A007MWW| IBM Security Key Lifecycle Manager For Usable Decimal Terabyte Storage Resource Value Unit License + SW Subscription & Support 12 Months
7S0A007PWW| IBM Security Key Lifecycle Manager For Usable Decimal Petabyte Storage Resource Value Unit License + SW Subscription & Support 12 Months

The following tables list the ThinkSystem servers that are compatible with the FoD upgrades for SKLM.
Table 8. IBM SKLM Key Management support (Part 1 of 3)

Table 9. IBM SKLM Key Management support (Part 2 of 3)

Table 10. IBM SKLM Key Management support (Part 3 of 3)

Warranty
The PM1655 SSDs carry a one-year, customer-replaceable unit (CRU) limited warranty. When the SSDs are installed in a supported server, these drives assume the system’s base warranty and any warranty upgrades.
Solid State Memory cells have an intrinsic, finite number of program/erase cycles that each cell can incur.
As a result, each solid state device has a maximum amount of program/erase cycles to which it can be subjected. The warranty for Lenovo solid state drives (SSDs) is limited to drives that have not reached the maximum guaranteed  number of program/erase cycles, as documented in the Official Published Specifications for the SSD product. A drive that reaches this limit may fail to operate according to its Specifications.

Physical specifications

PM1655 SSDs have the following physical specifications (without hot-swap tray):

• Height: 15 mm (0.6 in.)
• Width: 70 mm (2.8 in.)
• Depth: 100 mm (4.0 in.)
• Weight: 160 g (5.6 oz)

Operating environment

PM1655 SSDs are supported in the following environment:

• Temperature, operating: 0 – 70 °C (32 – 158 °F)
• Temperature, non-operating: -40 to 85 °C (-40 – 185 °F)
• Relative humidity: 5 – 95% (noncondensing)
• Maximum altitude: -300 – 4,572 m (-1,000 to 15,000 feet)

Agency approvals
PM1655 SSDs conform to the following regulations:

• UL
• TUV
• FCC
• IC
• CB
• CE Mark
• C-Tick Mark
• BSMI (Taiwan)
• KCC (Korea EMI)
• VCCI

Related publications and links
For more information, see the following documents:

• Lenovo Press product guides and papers on RAID adapters and HBAs
  https://lenovopress.com/servers/options/raid

• Lenovo RAID Management Tools and Resources
  https://lenovopress.com/lp0579-lenovo-raid-management-tools-and-resources

• Lenovo RAID Introduction
  https://lenovopress.com/lp0578-lenovo-raid-introduction

• Samsung Enterprise SSDs home page
  https://www.samsung.com/semiconductor/ssd/enterprise-ssd/

Related product families
Product families related to this document are the following:

• Drives

Notices
Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo  intellectual property right may be used instead. However, it is the user’s responsibility to evaluate and verify the operation of any other product, program, or service. Lenovo may have patents or pending patent applications covering  subject matter described in this document. The furnishing of this document does not give you any license to these patents. You can send license inquiries, in writing, to:
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This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. Lenovo may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time without notice.
The products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. The information contained in this document does not affect  or change Lenovo product specifications or warranties. Nothing in this document shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo or third parties. All information contained in  this document was obtained in specific environments and is presented as an illustration. The result obtained in other operating environments may vary. Lenovo may use or distribute any of the information you supply in any way it  believes appropriate without incurring any obligation to you.
Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the materials for this Lenovo product, and use of those Web sites is at your own risk. Any performance data contained herein was determined in a controlled environment. Therefore, the result obtained in other operating environments may vary significantly.  Some measurements may have been made on development-level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated  through extrapolation. Actual results may vary. Users of this document should verify the applicable data for their specific environment.
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References

• Lenovo RAID Introduction > Lenovo Press
• Lenovo RAID Management Tools and Resources (withdrawn product) > Lenovo Press
• RAID Adapters > Lenovo Press
• ThinkSystem PM1655 Mixed Use SAS 24Gb SSDs Product Guide > Lenovo Press
• Copyright and Trademark Information | Lenovo US | Lenovo US
• Enterprise SSD | SSD | Samsung Semiconductor Global

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