A01 Unity Family

“`html

Specifications

• Product Name: Dell Unity
• Release Version: 5.3.1.0.5.008
• Release Date: February 2024
• Release Type: Minor (MI)

Product Description

Dell Unity is targeted for midsized deployments, remote or
branch offices, and cost-sensitive mixed workloads. Unity systems
are designed for all-Flash, deliver the best value in the market,
and are available in purpose-built (all Flash or hybrid Flash),
converged deployment options (through VxBlock), and a
software-defined virtual edition.

The Dell Unity Family consists of:

• Community Edition: Free downloadable 4 TB solution for
  non-production use.

• Professional Edition: Licensed subscription-based offering
  available at capacity levels of 10 TB, 25 TB, 50 TB, and 350
  TB.

Features

Unity XT Platform (380/F, 480/F, 680/F, 880/F series): The Unity
Next Generation Platform refresh, also known as the Unity XT
Series, consists of 8 hardware models, including 4 Hybrid Flash and
4 All Flash configurations.

Unity XT Series Key Features:

• Increased performance of I/O

• Maximized storage efficiency features like Advanced Data
  Reduction with inline deduplication

• Supports a 25Gb interface card

Product Usage Instructions

Community Edition Usage:

1. Download the Community Edition from the official Dell
website.

2. Install the software on your system and follow the setup
instructions.

Professional Edition Usage:

1. Purchase the licensed subscription based on your required
capacity level.

2. Access online support resources provided with the
subscription.

Unity XT Platform Usage:

1. Refer to the Unity 380/F, 480/F, 680/F, and 880/F Hardware
Information Guide for detailed hardware specifications.

2. Utilize the Advanced Data Reduction feature for efficient
storage management.

FAQ

Q: What is the difference between Community Edition and

Professional Edition?

A: Community Edition is free for non-production use with a
limited capacity, while Professional Edition is a licensed
subscription offering with access to support resources.

Q: Which Unity models support Advanced Data Reduction?

A: The Unity XT series supports Advanced Data Reduction in both
dynamic and traditional pools in All Flash models, and All Flash
pools in Hybrid models.

“`

Rev. A01 Release Date: February 2024

Release Notes for the Dell UnityTM Family
These release notes contain supplemental information about this Unity release. Current Release Version: 5.3.1.0.5.008 Release Type: Minor (MI)
Topics:
Revision history …………………………………………………………………………………………………………………………………………………………………. 1 Product description ………………………………………………………………………………………………………………………………………………………….. 2 Resolved issues ………………………………………………………………………………………………………………………………………………………………… 3 Known issues ……………………………………………………………………………………………………………………………………………………………………. 4 Limitations ……………………………………………………………………………………………………………………………………………………………………….. 13 Environment and system requirements ……………………………………………………………………………………………………………………………. 14 Software media, organization, and files ……………………………………………………………………………………………………………………………. 14 Obtain and install product licenses ……………………………………………………………………………………………………………………………………15 Firmware ………………………………………………………………………………………………………………………………………………………………………….16 Documentation ………………………………………………………………………………………………………………………………………………………………… 17 Where to get help ……………………………………………………………………………………………………………………………………………………………. 17

Revision history

This section provides a description of document changes.

Revision history

Document revision A00

Date October 2023

Description Release 5.3.1.0.5.008

A01

February 2024

Updates CDES firmware

1

Product description
Dell Unity is targeted for midsized deployments, remote or branch offices, and cost-sensitive mixed workloads. Unity systems are designed for all-Flash, deliver the best value in the market, and are available in purpose-built (all Flash or hybrid Flash), converged deployment options (through VxBlock), and a software-defined virtual edition.
The Dell Unity Family consists of:
· Unity (purpose built): A modern midrange storage solution, engineered from the ground-up to meet market demands for Flash, affordability, and incredible simplicity. The Unity XT Family consists of 4 Hybrid Flash configurations (380/480/680/880) and 4 All Flash configurations (380F/480F/680F/880F) models.
· VxBlock (converged): Unity storage options are also available in Dell VxBlock System 1000.
· UnityVSA (virtual): The Unity Virtual Storage Appliance (VSA) allows the advanced unified storage and data management features of the Unity family to be easily deployed on VMware ESXi servers, for a `software defined’ approach. UnityVSA is available in two editions:
Community Edition is a free downloadable 4 TB solution recommended for non- production use.
Professional Edition is a licensed subscription-based offering available at capacity levels of 10 TB, 25 TB, 50 TB, and 350 TB. The subscription includes access to online support resources, EMC Secure Remote Services (ESRS), and on- call software- and systems-related support.
All three Unity, UnityVSA, and Unity-based VxBlock deployment options enjoy one architecture, one interface with consistent features and rich data services.
Unity is Redefining Storage Simplicity and Value
Here are some of the features and supporting statements that allows Unity to redefine midrange storage:
· Simple: Simplified ordering, all-inclusive software, rack-and-stack in less than 2 minutes, customer installable, a new slick HTML5 user interface, proactive assist, and CloudIQ internet-enabled monitoring.
· Modern: Unity is designed to support the latest dense Flash drives such as 3D TLC NAND with a Linux-based architecture, new Intel Haswell, Broadwell, and Skylake multicore processors, up to 440K IOPS, 2U dense configurations, scalable 64bit file system & file system shrink, unified snapshots & replication, Data-at-RestEncryption (D@RE), support for public and private cloud access, deep ecosystem integration with VMware (native vVols) and Microsoft, and much more.
· Affordable: Unity delivers the best midrange Flash economics with a great entry price and overall TCO. Unity All Flash configurations start under $15K and Unity Hybrid Flash configurations start under $10K. UnityVSA allows anyone to get started for free and upgrade into the supported virtual edition, a purpose-built hybrid or all-Flash system, or into converged infrastructure.
· Flexible: You can meet any storage deployment requirement with Unity from virtual to purpose-built to converged infrastructure. All deployment options support the same data unified data services (SAN/NAS and vVols) to support any workload with traditional file (file consolidation, VDI user data, home directories) as well as transactional workloads for both file and block on both all Flash and hybrid configurations (Oracle, Exchange, SQL Server, SharePoint, SAP, VMware and Microsoft Hyper-V).
Unity XT Platform (380/F, 480/F, 680/F, 880/F series)
The Unity Next Generation Platform refresh, also known as the Unity XT Series, consists of 8 hardware models, including 4 Hybrid Flash and 4 All Flash configurations–the Dell Unity 380, 380F, 480, 480F, 680, 680F, 880, and 880F. The XT series increases performance of I/O, maximizes storage efficiency features like Advanced Data Reduction with inline deduplication, and supports a 25Gb interface card.
The Unity 380(F) is based on the existing platform today for the 350F model, but with additional memory (64GBs per SP).
2

The Unity 480/F, 680/F, and 880/F are built on an Intel Skylake platform. For more information, see the Unity 380/F, 480/F, 680/F, and 880/F Hardware Information Guide.
The Unity XT series supports Advanced Data Reduction in both dynamic and traditional pools in All Flash (F) models, and All Flash pools in Hybrid models.
Unity software OE version 5.x and later supports the new x80 series models, in addition to all existing x00 and x50 series models.
Note: The Unity XT 480/F, 680/F, and 880/F are available for both high-line (200v-240v) and low-line (100v-120v) power environments, but you must select the appropriate option when ordering your system. Low-line is used in a select countries that supply 100-120V, typically through a wall outlet, while high- line is used in environments that supply 200-240V. Country-specific cables are available for plugging a Unity system directly into a wall outlet that either supplies 100-120V or 200-240V. If supplying 100-120V to a Unity XT 880/F, a step-up transformer is required.

Resolved issues

This table lists the issues fixed in this release. For all issues fixed in previous releases, refer to the release notes for that specific Unity OE.

Resolved issues in product version

Issue ID UNITYD-66958/ UNITYD-61624

Functional area Connectivity – Hosts

Description Windows hosts that use native Microsoft Multipath I/O (MPIO) cannot see LUNs on a Unity XT 380/380F with depopulated service processors in two scenarios: when you use the last two ports of the I/O module (port 2 or 3); or when you use the two CNA ports (4 or 5) without an I/O module installed. See KB 000212923 for more information.

UNITYD-66968/ UNITYD-62383

Hardware

Some SSD drives might be incorrectly flagged EOL and scheduled for replacement due to an internal error in calculating the power-on hours. See KB 000216667 for more information.

UNITYD-66957/ UNITYD-64808

Other

A host might experience an unexpected disruption due to a brief LUN offline event caused by an internal operation error.

UNITYD-66956/ UNITYD-55456

Performance Metrics

Performance charts might be unavailable on the System Performance Dashboard due to an internal race condition that stops metrics collection.

UNITYD-67955/ UNITYD-64240

Serviceability

Storage systems running OE 5.3.0 with SupportAssist configured and enabled for remote access might experience frequent (every few hours) alternating SP reboots. Error messages might report that SupportAssist has stopped working. See KB 000216860 for more information.

UNITYD-66970/ UNITYD-65662

Serviceability

Storage systems running OE 5.3.0 with SupportAssist configured and enabled for remote access may experience an unexpected SP reboot after approximately 2 months of uptime. See KB 000216765 for more information.

UNITYD-67757

Software Install and Upgrade

The pre-upgrade health check does not check whether the VDM root file system is full, and a subsequent upgrade could fail as a result.

UNITYD-67756

Software Install and Upgrade

The pre-upgrade health check does not check whether the /EMC/backend/log_shared partition is full, and a subsequent upgrade could fail as a result.

UNITYD-67000/ UNITYD-62280 UNITYD-66967/ UNITYD-60272

Storage – File Storage – File

If DHSM is enabled, the file system might go offline.
You might be unable to access an NFSv4 share when NFSv4 clients send requests for rename, open, and remount operations simultaneously to a VDM.

UNITYD-66966/ UNITYD-62384

Storage – File

When the quota policy is changed before enabling any user/tree quotas, a new write is allowed even if the quota hard limit is exceeded.

3

Issue ID UNITYD-66965/ UNITYD-60360
UNITYD-66963/ UNITYD-60239
UNITYD-66962/ UNITYD-60664
UNITYD-66960/ UNITYD-62984
UNITYD-66959/ UNITYD-60544

Functional area Storage – File
Storage – File Storage – File Storage – File Storage – File

Description If the user inputs a share name with a character that is not in the UCS2 character set during an SMB share connection, the accumulation of operations causes a very slow share connection and memory leak.
You cannot modify the mode bit in an NFSv3 share when the access policy of the file system is set to “Windows Security”.
In OE versions 5.2.x and 5.3.0, incorrect internal memory management might result in an unexpected storage processor reboot.
When you use OE version 5.2.x or 5.3.x, if you configure the SFTP RSA CERT key, the SP might reboot unexpectedly when you connect to SFTP.
If you delete a file that is bigger than 2 MB as the file receives more I/O before being cleaned up, I/O might become stuck.

Known issues

Known issues in product version

Issue ID 869166

Functional area Common Event Enabler

Description
When a host is configured to use CAVA for the CEPA server, there is a host IO error on SMB protocol with the following message in the logs: “Too many access from CAVA server xx.xx.xx.xx without the EMC VirusChecking privilege:>>> User credential (xx.xx.xx.xx address of the host).”

Wor k a r ou n d /S ol u t i on Do not use CAVA/CEPA NAS servers for regular host IO.

UNITYD-50686 UNITYD-60790

Connectivity – Hosts

LED light may not be On when inserting either a 32G or 16G SFP into a 4-port 32Gb Fibre Channel I/O module slot.

Connectivity – Networks

After you mount an NFSv3 share using the User Datagram Protocol (UDP) to the NAS server, which is enabled to reflect IP packets, large IO read requests (larger than the MTU) get no response.

Remove and reinsert the SFP card.
There are two workarounds that you can use: 1. Mount an NFSv3 file system (FS) share using TCP.

UNITYD-42194
932347/ UNITYD-5837

2. Mount an NFSv3 FS share using UDP, but disable the IP reflect packet feature.

Connectivity – Networks

In rare cases, if a link aggregation or fail-safe network (FSN) link is composed of two or more ports on a 4-port 1-GbE BaseT I/O module, changing the MTU speed for the link aggregation or FSN may cause an SP reboot.

First, modify the MTU speeds of the ports on the 4-port 1-GbE BaseT I/O module to the expected values. Then, modify the MTU speed of the link aggregation or FSN.

Connectivity – Networks

Immediately upon creation, the Fail-Safe Network (FSN) appears in a “Link Down” state. An alert similar to the following is displayed. “System XXX has experienced one or more problems that have had a minor impact” With a detailed description of “The system has experienced one or more

If all Ethernet ports participating in this FSN port, either directly or using Link Aggregation, are connected properly, the FSN port will automatically recover from “Link Down” state within 30 seconds or less. It is also possible that FSN port recovery goes through “Degraded” state, for approximately 60 seconds after the FSN creation. This alert can

4

Issue ID

Functional area

UNITYD-54629 Data mobility

UNITYD-54862 Data mobility

UNITYD-51634 Data mobility

UNITYD-51288 Data mobility

943734/ UNITYD-4469
906249/ UNITYD-2788

Data mobility Data mobility

UNITYD-45110

Data protection

UNITYD-36280 Data protection UNITYD-31870 Data protection

981344/ UNITYD-6289

Data protection

Description minor failures. Check related alerts and fix the underlying problems.”

Wor k a r ou n d /S ol u t i on be ignored, unless the FSN port fails to enter the “Link Up” and “Health OK” state approximately 60 seconds after creation.

Only the SMB1 protocol is supported for a Unified VNX (VNX1 or VNX2) storage system as the source storage system in a VDM file migration.

If either the SMB2 or SMB3 protocol is used on the VNX source system, the protocol must be changed to SMB1 before performing the migration.

If you use an atypical advanced replication configuration, such as using asynchronous replication inbound and synchronous replication outbound, the synchronous replication destination NAS server sometimes becomes faulted during a planned failover of asynchronous replication.

Before performing the planned failover asynchronous replication session, pause the synchronous replication session first. After the planned failover asynchronous replication session completes, resume the synchronous replication session.

In MetroSync when the MetroSync Manager is configured, if the MetroSync Manager detects that the source pool is offline, it initiates an unplanned failover. Even if the unplanned failover succeeds, the source site may not be cleaned up correctly, and the subsequent failback may fail.

Delete the synchronous session and recreate it but note that a full synchronization will occur.

When deleting a synchronous replication of a NAS server, if the peer SP is rebooting gracefully, the delete operation may fail.

Retry to delete the synchronous replication operation.

The “Last sync time” of a replication session is updated, but “transfer remaining size” is not zero.

Wait about 2 minutes, then view the replication session details again.

A request to create a replication session for VMware NFS datastore which resides in a multiprotocol NAS server will fail until the first synchronization of the associated NAS server replication session.

Synchronize the NAS server replication session at least once prior to creating a replication session for a VMware NFS datastore residing on the multiprotocol NAS server.

When the system is configured with a large number of replications (over 1000) and both SPs are rebooted simultaneously, one storage processor may experience an additional reboot after system comes back up.

No manual operation needed. The system will automatically recover after the reboot.

The snapshot schedule function failed to create a scheduled snapshot of a synchronous replication-protected file system during the session failback operation.

None.

The snapshot schedule timer reset (restarted from 0) after the Unity management service was rebooted, or a new resource was assigned to it. This leads to this schedule being applied to existing resources.

None.

There are three Arrays: A, B, C. The following scenario occurs:

1. To prevent this issue, wait two minutes after the failover, then run the preserve operation.
2. If this issue occurs, rerun the preserve operation.

5

Issue ID

Functional area

949119/ UNITYD4769/ UNITYD5112

Data protection

821501

Data protection

875485

Data protection

917298

Data protection

17379

Hardware

UNITYD-31523 Import

Description 1. Site A-B set up synchronous replication sessions.

Wor k a r ou n d /S ol u t i on

2. Site A-C set up asynchronous replication sessions.

3. Shut down site A and do a cabinet failover on B.

4. Preserve all asynchronous replication sessions immediately on B.

Some asynchronous replication sessions are not preserved. (No Error message in Site B. The asynchronous replication sessions which are not preserved will be “Lost Communication” in Site C.)

If an NDMP restore restores a file which exceeds a quota hard limit, the file will be restored as owned by the root user.

The administrator should manually increase the quota limitation for the user and correct the file ownership.

When a user runs a token-based incremental backup using Networker, a full backup is performed instead.

Add ATTEMPT_TBB=Y to Application Information while configuring the NDMP client, or change the value in the NDMP client properties.

The following error could be returned when multiple snap diff REST API requests were sent in parallel.
“`{ “error”: { “created”:
“2016-12-05T17:34:36.533Z”,
“errorCode”: 131149826,
“httpStatusCode”: 503, “messages”:
[ { “en-US”: “The system is busy. Try again later. If the problem persists, search for the error code on the support website or product forums, or contact your service provider, if available. (Error Code:
0x7d13002)” } ] } }”

Reduce the number of parallel operations and try again.

NAS_A or NAS_B and related user VDMs failed to recover due to error occurs in the system VDM NAS_A or NAS_B, as seen in the Unisphere CLI or UI. After following the recommended resolution steps in the health details, the NAS servers are recovered and go into a ready state. However, the replication sessions on these system VDMs and related user VDMs will no longer be visible.

After recovery, reboot the primary SP. After the SP reboot, system NAS servers will be recovered successfully, allowing replication sessions to be recovered.

In some Unity XT 480/F, 680/F, and 880/F model DPEs, the Non-maskable Interrupt (NMI) (hard reset) button is misaligned.

Press the NMI button at an angle. Refer to KB 000022355 for more information.

When using a “UNIX” access policy, if a domain user belongs to “domain admin” or the “administrators” group, files created by the user will use “administrators” as owner, which is expected behavior for Windows.

Change the owner to the correct user.

6

Issue ID
938977/ UNITYD-4327 969495
952772/ UNITYD-5971 999112 UNITYD-44958
908930

Functional area
Import Import
Notifications and alerts Notifications and alerts Software install and upgrade
Storage – Block

Description If using an NFS client to list these files, the file owner is the user.

Wor k a r ou n d /S ol u t i on

After migration, the owner of the files from the CIFS client will be the “administrator”, and the owner of files from NFS client will be “2151678452”. This may cause some files created by the CIFS client before migration cut over to be inaccessible by the NFS client after migration cutting over.

When creating a remote system for file import, when the SANCopy connection is created and the remote system is verified prior to starting a block import, the SANCopy host is not created, so the user cannot create a block import session.

Delete and recreate the remote system. After re-creating the remote system, the SANCopy host can be created successfully.

If a pool out-of-space event occurs on a destination Unity array after a file migration session cutover from VNX to Unity, it is possible that some folders and files are lost on the Unity array. Although the migration session can resume and complete after expanding the destination pool, no warning or error message will occur mentioning that data may be missing.
A misleading alert “Unable to detect Ethernet port or link aggregation for the network interface N/A configured on NAS server %1.” displays during NAS server deletion, even though it completes successfully.

1. Always plan to have enough space on the destination pool before starting a migration. Extra buffer space may be needed if there might be continuous large I/O during the migration.
2. If a pool out-of-space event does occur after cutover, cancel the migration session, and start again by creating a new session.
Ignore the erroneous alert.

The health description for Ethernet port is incorrect; it shows that this port was not in used, but in fact it was used for some file interfaces.

Bring up the ethernet port and then the health status and description will be updated.

During an upgrade from Unity OE 5.0.x to 5.1.x on Unity XT 480/480F, 680/680F, 880/880F systems, due to the firmware contents change between 5.0 and 5.1, in the first reboot cycle, a firmware upgrade was started.

None. Refer to Knowledge Base article 000195767 for more information.

During this short time window, if an unexpected firmware issue occurred, this leads to the firmware becoming corrupted and it cannot be recovered by a system reboot or power cycle. The SP goes into service mode after the firmware upgrade fails.

Even when snap auto delete is disabled on the storage pool, the storage pool may still show a degraded state indicating it could not reach low water mark.

Use the CLI to increase the pool space low water mark in order to bring the pool back to normal state. For example:
uemcli -u xxx -p xxx / stor/config/pool ­id pool_97 set snapPoolFullLWM 40

7

Issue ID 128333021/ UNITYD-52094/ UNITYD-53457

Functional area Storage – File

UNITYD-51284 Storage – File

119078191 / UNITYD-48904/ UNITYD-53251

Storage – File

20199488/ UNITYD-45132/ UNITYD-53297

Storage – File

855767/ UNITYD-1261

Storage – File

942923/ UNITYD-7663

Storage – File

959208/ UNITYD-5257

Storage – File

974999

Storage – File

Description After upgrading to Unity OE version 5.1.x, the audit log path and size are reset to the defaults.
When creating many asynchronous replication sessions concurrently by using automatic scripts, the sessions may partially fail.

Wor k a r ou n d /S ol u t i on
Change the “cifs userDefinedLogFiles” parameter to 0 and restart the VDM. Refer to Knowledge Base article 000193985 for more information.
Delete any failed replication sessions from the destination system, and reconfigure them one at a time.

When adding a new interface to a NAS server, if the preferred interface has an “auto” setting, the preferred interface is not switched to the newly added one if it has same gateway availability and number of routes as the currently active preferred interface.

Either make a specific interface to be the preferred interface, or make sure the DNS servers added with the new interface are active before adding it.

During specific circumstances when a file system becomes full and is made Read-Only, the file cannot be deleted as expected. However, the return code from Unity system does not adhere to the RFC. There is no loss of functionality.

None.

When you customize a list of CIFS Shares Access Control Entries (ACEs) by either making a REST API call, editing the share permission using the Windows MMC console, or by using the SMI-S API, isACEEnabled might erroneously indicate false.

Ignore the value isACEEnabled=false in this case. When ACEs are properly set, they are always enabled, despite this value in the REST API attribute. A REST API request for list of ACEs will return the correct list of custom ACEs for the share, and those ACEs will all apply.
Alternatively, force a reload of the management model for the share by changing the share description, or for the whole system by restarting the management software.

If you have set different user quotas on a non-multiprotocol SMB file system that you are changing to a multiprotocol file system, the Remapping File Owner process will not preserve the specific user quotas you had set previously. If the user quotas are all the same or (have default value), this issue does not occur.

After remapping users to their Unix user counterpart, re-issue the specific User Quota settings.

If an LDAP user is configured before Directory Services (LDAP) is configured, and a local user account with the same name exists, the array will report that the LDAP user already exists, instead of ‘not found in the LDAP database’.

Configure LDAP and reboot the SP Then, add the LDAP user (role) again. This will be allowed even if a local user with the same account name exists.

When opening or deleting a locked file from an FLR-enabled file system on a Windows client, sometimes there are several additional log events generated in the FLR activity log.

This issue will not happen on NFS client, and it just generates some additional log events, which can be seen by administrator. Ignore these log events.

8

Issue ID 975192

Functional area Storage – File

Description When automatic file locking is enabled on an FLR-enabled file system, a file on an SMB share can be locked automatically. However, the file mode property might not be updated and will not indicate the file is read-only even though it is protected.

Wor k a r ou n d /S ol u t i on Use the FLR Toolkit to determine whether the file is automatically locked instead of the SMB client.

UNITYD-60279 SupportAssist
UNITYD-58751 SupportAssist UNITYD-52201 System management

896002

System management

973979

System management

998582/ UNITYD-7835

Unisphere UI

When upgrading from old releases to Unity OE version 5.3, the automatic conversion from integrated ESRS with proxy to the latest SupportAssist will fail if the Unity system is in a private LAN. In this configuration, Unity has no direct network connection to Dell backend services (esrs3core.emc.com).

No workaround.
SupportAssist needs to be configured manually to restore the connection to Dell backend services.

There is a post-upgrade alert, 14:38004b (Migration from Integrated ESRS to SupportAssist failed. Configure SupportAssist manually.)

If SupportAssist is disabled when there is an active remote session in progress, the active remote session may remain active.

Contact your service provider to close the active session.

When trying to create or expand a traditional pool with the following conditions, the listed drive count available for a tier might be 0 due to an internal timeout error (>10mins):
1. RAID5 with maximum capacity option.
2. The disk group for this tier has 500+ free drives.

Use one of the following options to fix the issue:
· Use the CLI to expand the pool.
· Use either Unisphere or the CLI to create a dynamic pool that contains some of the drives in the large disk group, reducing the free drive count in the disk group to be less than 500. Then use Unisphere to expand the original traditional pool.

If a Unity system uses NTP for synchronization, when the time is adjusted to an earlier time from the current time, realtime system metrics do not appear, and the system generates “Query ID not found (0x7d1400c)” errors.

In Unisphere, navigate to another page and then return to the metrics page, or log out of Unisphere and log in again.

When you create a file system named “‘, the SMB share page in the GUI does not display the proper description for the shares associated with file system named “‘ and the UEMCLI does not display the proper values for the shares associated with file system named “‘.

Do not name file system “”.

When there are many storage resources configured on the array, (for example, 6000 LUNs and 2000 file systems), filtering the LUNs using a keyword for the LUN name in the Unisphere UI may take over five minutes,

Reload the Unisphere UI, then choose a more specific keyword that matches fewer LUNs, or do not use keyword filters on large configurations.

9

Issue ID

Functional area

921511/ UNITYD-3397

Unisphere UI

946287/ UNITYD-4572

Unisphere UI

968227/ UNITYD-5636

Unisphere UI

849914

Unisphere UI

907158

Unisphere UI

995936 UNITYD-7474

Unisphere UI

895052 945773

UnityVSA UnityVSA

Description and then show an error message if there are multiple matches (1500+ matches).

Wor k a r ou n d /S ol u t i on

Unisphere returns the following message: “Your security session has expired. You will be redirected to the login page.”

Confirm that the Unisphere login account in use is still active has Storage Admin privileges. Be sure to close the active browser session before logging with another account.

When logging into Unisphere as one user and then trying to log in as another user without restarting the browser, some login information is cached by the browser and this will result in a failure.

Restart the browser to log in successfully.

In rare circumstances, when a user creates a snapshot by using the Unisphere UI, an unexpected error may occur. However, the actual snapshot creation completed successfully. The newly created snapshot will display immediately.
The unexpected error occurs because the REST API failed to fetch the snapshot ID.

Ignore the error if the newly created snapshot appears.

The Job Details page in Unisphere does not display the name of a LUN group after it failed to be deleted.

There is no workaround for this issue.

After upgrading from a system running Unity OE 4.0 or 4.1, the Unisphere UI did not allow the NAS server SP owner to be changed

Clear browser cookies to and refresh Unisphere.

Incorrect drive health information may

display in the Unisphere UI if switching a

SAS cable from an onboard SAS port to

backend SLIC port. FBE show these drives as “OK” while Unisphere shows these drives

as faulted.

For example, if switching the SAS cable from SAS port 0 to backend SLIC port 0, then DAE 0_0 becomes DAE 2_0, and the related disks change from Disk 0_0_X to Disk 2_0_X . Unisphere will display these drives as faulted.

Identify the primary SP in Unisphere under Service Service tasks.
Reboot the primary SP using the “svc_shutdown -r” service command.

SSH is disabled after a single-Storage Processor UnityVSA upgrade.

After performing a Unity OE upgrade, re-enable SSH using Unisphere or the Unisphere service command “svc_ssh -e”.

The following error displays on the UnityVSA:
“Error : <CPU of the physical server hosting UnityVSA does not meet the CPU instruction set minimum requirement (SSE4.2 or greater) for upgrading to this release or later.> Action: Migrate the UnityVSA to a server with a CPU that supports SSE4.2 or greater, or deploy a new UnityVSA on a CPU that supports SSE4.2 or greater. Then retry the upgrade.”

When upgrading the UnityVSA to Unity 4.3 or deploying a new 4.3 UnityVSA on an older server that does not support CPU instruction set SSE4.2, migrate the VSA offline to another VMware ESXi server or cluster. If the upgrade fails on the ESXi cluster and that cluster contains any servers that do not support CPU instruction set SSE4.2, modify the Enhanced vMotion Capability (EVC) settings within the VMware cluster to disallow

10

Issue ID 933016
801368/ 802226

Functional area UnityVSA
UnityVSA

Description

Wor k a r ou n d /S ol u t i on vMotion from the newer servers that support SSE4.2 to the older servers.

Remove the older servers from their cluster. Power cycle the UnityVSA and retry the upgrade.

The system reports an alert that the network None. heartbeat is questionable on the peer when the local physical network cable is broken.

This occurs when:

1. UnityVSA SPA runs in the physical server #1, UnityVSA SPB runs in the physical server #2.

2. The physical network cable #1 connects the uplink #1 of server #1 and the physical switch.

3. The physical network cable #2 connects the uplink #2 of server #2 and the physical switch.

4. The physical network cable #3 connects the uplink #1 of server #1 and the physical switch.

5. The physical network cable #4 connects the uplink #2 of server #2 and the physical switch.

6. When one of the physical network cables #1 or #2 is broken or pulled out, the system reports the alert. But if you pull out cable #1, the alert would be reported on SPB. If you pull out the cable #2, the alert would be reported on SPA.

7. When one of the physical network cables #3 or #4 is broken or pulled out, the system would report alert. But if you pull out cable #3, the alert would be reported on SPB. If you pull out the cable #4, the alert would be reported on SPA.

This happens because the UnityVSA vNIC #1 is connected to the port group #1 and NIC #2 to the port group #2. Also, by the VMware teaming function, port group #1 has been bound to uplink #1 and port group #2 to uplink #2. It is expected that after pulling out cable #1 (the physical uplink #1 is down), the traffic going through NIC #1, port group #1, uplink #1 should be cut off. However, because of a VMware limitation, the teaming only controls the egress, but not the ingress. The traffic sent from NIC #1 is truly cut off, but the traffic from the peer’s port group #1 still comes through the physical uplink

2 and is routed to the port group #1.

The storage system restarts unexpectedly with a monitor timeout or software watchdog timeout. This occurs when the system and user data share the same

It is recommended that user storage be on a separate data store than the

11

Issue ID

Functional area

809371

UnityVSA

UNITYD-44726 Virtualization

940223 / 945505 / UNITYD-4468
811020

Virtualization Virtualization

987324

Virtualization

988933

Virtualization

Description datastores (physical disks) and the system is overloaded with aggressive I/O workloads.

Wor k a r ou n d /S ol u t i on system data store where UnityVSA is deployed.

For example, a system can become overloaded when the workload includes heavy sequential write block I/O mixed with random file read and write I/O.

If that is not possible, ensure that there are no more than four virtual disks on the system data store. If user data is allocated on the system data store, it can be migrated to a different data store. See the vSphere documentation for details. For UnityVSA deployment considerations, see the UnityVSA Installation Guide.

When configuring a NAS server for replication from a Unity system to a UnityVSA system, the user can choose a storage processor on the destination, although a single-SP UnityVSA has only one storage processor (SP A). Choosing SP B and continuing to create the session results in an error.

Choose SP A when replicating to a single-SP UnityVSA.

If a VMware traditional datastore is extended which does not have any host access, then host access cannot be added later.

Delete the VMware datastore and recreate it. A datastore that has never had any host access is supposed to be a clean datastore with no data.

A VM migration (using vMotion) to or from NFS3-NFS4 datastore sporadically fails when an SP is rebooted during migration.

Manually restart the vMotion migration when the SP is back online.

When there are no datastores enabled for access to a target ESXi host during replication, the storage system iSCSI targets are not registered on the target ESXi server. When the Storage Replication Adapter (SRA) requests that the storage system enable Snaps-Only access to the target ESXi server, the operation succeeds, but rescan does not discover the snapshots.

Manually configure iSCSI target discovery of the storage systems iSCSI addresses on the ESXi hosts.

With multiple VM clones from the same source VM, part of clone could fail.
vCenter Server reports events similar to:
Unable to access file xxx.vmdk since it is locked.

To work around the issue in ESXi 5.0 or later, increase the number of times to retry opening the disk:
1. Log in to the ESXi host with root credentials. 2. Open the /etc/vmware/config file using a text editor. 3. Add this line to the end of the file:
diskLib.openRetries=xx [Where xx depends on the number of virtual machines being deployed in the vApp. VMware recommends a value between 20 and 50.] 4. Save and close the file. 5. Reboot the host for the changes to take effect.

When using Dell Virtual Storage Integrator (VSI), VMware datastore creation fails on Unity All Flash and UnityVSA systems.

The issue is fixed in VSI 8.1. Refer to the following Knowledgebase articles for details:
· UnityVSA: KB# 163429

12

Issue ID 989789

Functional area Virtualization

Description
When a VM migration in VMware vSphere is in progress, a planned failover of the underlying synchronous replication file system on Unity at the same time may cause VM migration failure on vSphere.

Wor k a r ou n d /S ol u t i on
· Unity All Flash: KB# 36884 Do not perform a synchronous replication planned failover on Unity while migrating a VM on VMware vSphere at the same time. If the error occurs, wait until planned failover completes and retry the VM migration in VMware vSphere.

Limitations

Learn about limitations in Unity.

Limitations in product version

Limitation
In a replication cascading topology from an asynchronous replication session to a synchronous replication session, the synchronous replication destination data integration is not integrated.

First affected release
5.2.0.0.5.173

Moving drives between Unity x80/F models and non-x80/F models is not supported. This ensures that the drives are qualified and configured for the correct platform and will provide optimal performance and longevity.

5.1.0.0.5.394

After a failover, the UNIX and Windows names may not display immediately and could take up to 24 hours to display. You can manually refresh the username for a UID or wait until the next system refresh to see the correct names.

5.1.0.0.5.394

A large thick file system (TB level) takes time to provision, even after the operation returns a success message in Unisphere. While the provisioning operation is in progress, many operations, such as asynchronous replication creation, cannot be run and will fail due to timing out. Operating on a newly- created thick file system after a certain amount of time is recommended. Run a query to check the status of the operation.

All versions

When replicating VMware VMFS datastores, they are treated like Consistency Groups in that they are subject to the same replication limits as CGs (for example, the maximum number of replication sessions for CGs is 64, which also applies to VMFS datastores).

All versions

Using VSI 7.4 or VSI 8.0 to create a VMFS Datastore on a Unity all Flash array or UnityVSA will fail. It is recommended to always provision VMFS datastores and vVols through the Unity Unisphere UI or CLI.

All versions

VMware vSphere 6.5 is not supported on the UnityVSA 4.1.x.

4.1.0.8940590

Limitation lifted Still in effect. Still in effect. Still in effect. Still in effect.
Still in effect. Still in effect. 4.2.0.9392909

13

Limitation When setting I/O limit policies, observe the following restrictions:

First affected release
4.0.0.7329527

· For a shared KBPS I/O limit policy, set the limit to be at least 2048 KBPS.

· For a non-shared KBPS I/O limit policy, set the limit to be at least 1024 KBPS.

· The IOPS I/O limit policy’s minimum is 100 IOPS.

The current Unity vVol implementation has not yet been fully certified for use with VMware Horizon View. Although it may work, it is recommended that you do not deploy VDI desktops using Unity vVol datastores. Support and issue resolution will not be available for this integration.

4.0.0.7329527

Limitation lifted Still in effect.
Still in effect.

Environment and system requirements
In order for your Unity Family system to function properly, ensure that your environment meets these minimal requirements.
Support matrix
34B
Refer to the Unity Support Matrix on the support website for compatibility and interoperability information.
Screen size
35B
The minimum resolution for using the Unisphere GUI is 1024 x 768 pixels. Smaller screens may be able to display the GUI in full screen mode.
SupportAssist and DHCP
36B
Do not use dynamic IP addresses (DHCP) for any components of the Secure Connect Gateway servers or managed devices unless they are configured with the FQDN of the Secure Connect Gateway server.
An IP address is not needed for a SupportAssist configuration with a connection type of direct connect. If you use DHCP to assign IP addresses to any SupportAssist components (Secure Connect Gateway servers or managed devices), they must have static IP addresses. Leases for the IP addresses that those devices use cannot be set to expire. It is recommended that you assign static IP addresses to those devices you plan to have managed by SupportAssist. For a SupportAssist configuration with a connection type of connect through a gateway, FQDNs can be configured instead of IP addresses.
Software media, organization, and files
Learn about software media, organization, and files required for the Unity Family.
Required update
37B
It is recommended that you keep your Unity Family system up to date by upgrading to the latest software version at your earliest opportunity.
Problems downloading this release
38B
If you have difficulty downloading this release using Microsoft Internet Explorer version 7, try using a newer version of Microsoft Internet Explorer, Google Chrome, or Mozilla Firefox version 4 or greater.

14

Obtain and install product licenses
Before you begin: · Register your product. This provides you instant access to easy-to-use tools to plan, install, maintain, and service your product. It also entitles you to software updates, installation tools, and more. · Ensure that you have the following: License authorization code (LAC)–The LAC is sent by email from Dell. The system serial number (physical systems) or the system UUID (virtual systems).
Before you can create storage, you must install product and feature licenses on your system.
Initial Configuration
1. On the Unisphere Licenses page of the Initial Configuration wizard, select Get License Online. 2. Follow the instructions on the licensing website and download the license file locally.
Note: Do not change the name of the license file. 3. Select Install License and use Chose File to browse to the license file you downloaded locally. 4. Select Open.
The Results page will confirm the license was successfully installed.
Obtaining and installing additional licenses after initial configuration
1. In Unisphere, select the Settings icon, and then select Software and Licenses > License Information. 2. Select a product license from the list to display a description of that license. 3. To obtain a product license, select Get License Online.
a. Use the link provided in the LAC email or access the product page on the support website, and download the license file locally. Note: Do not change the name of the license file.
b. Transfer the license file to a computer that has access to the storage system, or connect the computer you used to obtain the license file to the same subnet of the storage system.
4. To upload a product license, select Install License. a. Review the Software License and Maintenance Agreement and select Accept license agreement. b. Locate the license file, select it, and select Open to install the license file on the storage system.
The license file is installed on the storage system. For sites with restricted internet access, or for more information on obtaining your license, go to the Unity Info Hub at dell.com/unitydocs.
Unique identifier for UnityVSA
For UnityVSA, use the License Activation Key instead of the serial number or UUID as the unique identifier for setting up EMC Secure Remote Services (ESRS) and for obtaining customer support (professional editions).
15

Installing and enabling language packs
To install a language pack: 1. Review the considerations included in the Software Media, Organization, and Files section. 2. In Unisphere, select the Settings icon, and then select Software and Licenses > Language Packs. 3. Select Obtain Language Pack Online and enter your Support credentials when prompted. 4. Download the appropriate language pack file to your local system. 5. Return to Unisphere and select Install Language Pack to launch the Install Language Pack wizard. 6. Select Choose File and then select the language pack you want to upload. 7. Select Next to begin the installation of the language pack onto your system. 8. Select Finish. 9. Once language package installation completes, view the results and close. To enable a language pack on your system: 1. In Unisphere, select the My Account icon and select Preferences. 2. Select the preferred language from the Language list. 3. Select OK.

Firmware

Drive firmware bundle version 20 is included in this software OE bundle. Once the software OE installation has completed, a prompt appears if updates are available. However, it is recommended to upgrade to the latest drive firmware prior to a software upgrade to help mitigate any non-disruptive upgrade issues. For a list of all drive firmware and their respective drives, refer to Knowledge Base article 000021322 (previously article 000490700).

The following firmware variants are included with this release:

· If a lower revision is installed, the firmware is automatically upgraded to the revision contained in this version.

· If a higher revision is running, the firmware is not downgraded to the revision contained in this version.

Enclosure Type 3U, 15-drive DAE

Firmware 2.38.11

2U, 25-drive DAE

2.38.11

3U, 80-drive DAE

2.38.11

DPE expander

2.38.11

16

Platform Type BIOS

2U, 25-drive DPE
2U, 12-drive DPE
2U, 25-drive DPE Unity XT 480/F, 680/F, and 880/F

60.04 60.04 66.82

BMC Firmware 25.00
25.00
25.23

Post 34.60 34.60 52.74

Documentation
Unity Family Info Hubs
Additional relevant documentation can be obtained from the Unity Family Info Hub. Visit the Info Hub for your Unity Family product to access helpful utilities, videos, and other guides and https://www.dell.com/unitydocs.
Where to get help
The Dell Technologies Support site (https://www.dell.com/support) contains important information about products and services including drivers, installation packages, product documentation, knowledge base articles, and advisories.
A valid support contract and account might be required to access all the available information about a specific Dell Technologies product or service.
Advisories
42B
For information on an individual technical or security advisory, go to the Online Support website and search by using the DSA number or “Dell Security Advisories” as the keyword.
You can also select an option to receive alerts for Dell Technical Advisories (DTAs) and Dell Security Advisories (DSAs) to stay informed of critical issues and prevent potential impact to your environment. Go to your account settings and preferences in Online Support, type the name of an individual product, click to select it from the list, and then click Add Alert. For the individual product or All Dell Products, enable the DTA’s and/or DSA’s toggle.

17

Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates potential for property damage, personal injury, or death.
© 2016 ­ 2024 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.
18

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>