Dell EMC PowerVault ME484 Owner's manual

Brand: Dell

Model: EMC PowerVault ME484

Type: Owner's manual

This manual is also suitable for

Dell EMC PowerVault ME4 Series Storage

System

Release Notes

August 2020

Rev. A08

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 a potential for property damage, personal injury, or death.

trademarks may be trademarks of their respective owners.

Chapter 1: Document history............................................................................................................4

Chapter 2: GT280R008-01 Firmware................................................................................................ 5

Fixed issues in GT280R008-01 firmware............................................................................................................................5

Known issues in GT280R008-01 firmware.........................................................................................................................6

Chapter 3: GT280R006-02 Firmware................................................................................................ 8

Fixed issues in GT280R006-02 firmware...........................................................................................................................8

Chapter 4: GT280R006-01 Firmware................................................................................................ 9

New features and enhancements....................................................................................................................................... 9

Fixed issues in GT280R006-01 firmware............................................................................................................................9

Known issues in GT280R006-01 firmware....................................................................................................................... 10

Chapter 5: GT280R004-01 Firmware............................................................................................... 12

New features and enhancements...................................................................................................................................... 12

Fixed issues in GT280R004-01 firmware.......................................................................................................................... 12

Known issues in GT280R004-01 firmware....................................................................................................................... 16

Chapter 6: GT275R005-04 Firmware...............................................................................................17

New features and enhancements...................................................................................................................................... 17

Fixed issues in GT275R005-04 firmware..........................................................................................................................17

Known issues in GT275R005-04 firmware.......................................................................................................................17

Chapter 7: Resources and support..................................................................................................23

Related documentation.......................................................................................................................................................23

Contacting Dell EMC...........................................................................................................................................................24

Contents

Contents 3

Document history

This document describes the new features, enhancements, fixed issues, and open issues in the ME4 Series firmware.

Table 1. Document revision history

Revision Date Description

A01 October 2018 Added known issues

A02 December 2018 Updated for GT275R005-04 firmware

A03 September 2019 Updated for GT280R004-01 firmware

A04 October 2019 Added additional fixed and known issues for GT280R004-01 firmware

A05 December 2019 Updated for GT280R006-01 firmware

A06 February 2020 Updated for GT280R006-02 firmware

A07 April 2020 Added fixed issue for GT280R006-01 firmware

A08 August 2020 Updated for GT280R008-01 firmware

For a complete list of supported hardware and software, see the Dell EMC PowerVault ME4 Series Storage System Support Matrix on

Dell.com/support.

4 Document history

GT280R008-01 Firmware

This section describes the new features, fixed issues, and known issues in the GT280R008-01 firmware release.

Topics:

• Fixed issues in GT280R008-01 firmware

• Known issues in GT280R008-01 firmware

Fixed issues in GT280R008-01 firmware

The following issues are fixed in GT280R008-01 firmware:

NOTE: The fixed issues in the ME4 Series firmware are cumulative. The latest release of the ME4 Series firmware

contains all the fixed issues from previous releases of the firmware.

Table 2. Fixed alert and reporting issues

Issue Description

FMW-37147 The No More Global Spares type event is not logged when all global spares are used.

FMW-35134 Changed the severity of Event 608 from Informational to Error.

Table 3. Fixed security issues

Issue Description

FMW-36632 Updated OpenSSH to OpenSSH 8.2p1

FMW-36478 Updated OpenSSL to OpenSSL 1.1.1g

FMW-34202 Added patch for CVE-2015-1465

FMW-34201 Added patch for CVE-2015-5364

FMW-34195 Added patch for CVE-2016-7117

FMW-34193 Added patch for CVE-2014-2523

FMW-34192 Added patch for CVE-2016-7117

Table 4. Fixed storage management issues

Issue Description

TT 51988 On a storage system with iSCSI ports, a controller might crash because of a TX queue resource leak on Task

Management Function (TMF) responses.

FMW-35382 A page fault might occur when the restore factory defaults command is run on a storage system with a

SAS host interface.

FMW-35377 When a new disk group is added to the storage system, the system might remove a disk group that is being used to

copy metadata to the new disk group.

FMW-35374 The queue policy now changes from Discard to Queue Latest when the pool reaches the high threshold.

FMW-35373 A controller might crash when a Cancel Replication message is sent to secondary system that does not have the

Replication Set.

FMW-35369 A controller might crash if the system runs out of internal resources.

FMW-35367 Fixed an assert in the I/O error path when the pool is full.

GT280R008-01 Firmware 5

Table 4. Fixed storage management issues (continued)

Issue Description

FMW-35342 Split write I/O, and replication deadlocks might occur when the pool is out of space.

FMW-35092 A controller might crash because of I/O that occurs when the pool is out of space.

FMW-35091 A controller might crash because of split write I/O and scheduled snapshot when the pool is out of space.

FMW-35061 When more than two drives in a RAID 6 disk group are down and the controllers are restarted, the disk group

comes up as fault tolerant and online (FTOL) instead of quarantined offline (QTOF).

FMW-35015 Changing the full-disk encryption (FDE) status from Unsecured to Secured might cause drives to report a health

status of Degraded.

FMW-34792 In a dual-controller configuration, a shutdown stall might occur when stale data is flushed to a quarantined disk

group.

FMW-34072 Fixed an issue in the ATS state machine to return DMA to cache by checking for no outstanding worker I/O.

FMW-34014 A dual-controller crash might occur if both RAID I/O Modules (RIOM) reboot with the Critical Error:

OSMEnterDebugger.

FMW-29997 A corruption in the midplane vital product data (VPD) might result in mismatching VPDs.

FMW-33752 A storage system might experience intermittent fan failures.

Table 5. Fixed SupportAssist and CloudIQ issues

Issue Description

FMW-36111 The output of the show support-assist and show cloud-iq commands are not included in the data that is

sent to SupportAssist.

FMW-34857 Memory leak in the service that is responsible for all communication with the SupportAssist server.

51982 The order in which commands are sent to enable or disable SupportAssist and CloudIQ are incorrect.

51957 Some UTC time zones are missing from the list of valid parameters for the set support-assist-info

command.

Table 6. Fixed user interface issues

Issue Description

FMW-34563 The text in the Remove All Mappings dialog box is misleading.

FMW-33121 The default password changed attribute is set incorrectly when new users are created in PowerVault

Manager.

51940 The Advanced Settings dialog box might fail to properly display text on the Disk tab.

51831 The Create Snapshot dialog box might fail to correctly convert a time that is specified in 12-hour format to 24-

hour format.

51414 An incorrect warning message about spares might be displayed in PowerVault Manager.

Known issues in GT280R008-01 firmware

The following are known issues in GT280R008-01 firmware:

Table 7. Known installation and update issues

Issue Description

50140 In rare cases, after installing a firmware bundle, event 235 is logged with details that include Not Ready,

enclosure services unavailable.

Workaround: Quiesce I/O to the storage system and then power cycle the controller enclosure.

6 GT280R008-01 Firmware

Table 8. Known storage management issues

Issue Description

51833 Performance issues with 10Gbase-T controllers and Intel Ethernet Converged Network Adapter X520.

Workaround: Update to the latest version of the Intel Ethernet Converged Network Adapter X520 driver. Then,

disable the interrupts in the Intel Ethernet Converged Network Adapter X520 driver.

49962 PowerVault Manager panels use inconsistent terms for SAS disks:

• MDL and SAS MDL are spinning midline or nearline SAS disks.

• SSD and sSAS are SAS SSDs.

Workaround: None

49055 SLP for IPv6 and DNS is not supported.

Workaround: None

GT280R008-01 Firmware 7

GT280R006-02 Firmware

This section describes the new features, fixed issues, and known issues in the GT280R006-02 firmware release.

Topics:

• Fixed issues in GT280R006-02 firmware

Fixed issues in GT280R006-02 firmware

The following issues are fixed in GT280R006-02 firmware:

NOTE: The fixed issues in the ME4 Series firmware are cumulative. The latest release of the ME4 Series firmware

contains all of the fixed issues from previous releases of the firmware.

Table 9. Fixed storage management issues

Issue Description

FMW-34754 A memory leak in the SupportAssist service might cause intermittent communication issues with the Management

Controller.

FMW-34000 An issue with a new Ethernet driver in the GT280R006-01 firmware might cause intermittent communication issues

with the Management Controller.

8 GT280R006-02 Firmware

GT280R006-01 Firmware

This section describes the new features, fixed issues, and known issues in the GT280R006-01 firmware release.

Topics:

• New features and enhancements

• Fixed issues in GT280R006-01 firmware

• Known issues in GT280R006-01 firmware

New features and enhancements

The following new features and enhancements are in the GT280R006-01 firmware release:

• CloudIQ Improvements – Improved CloudIQ telemetry data payloads for future feature sets.

• PowerVault Manager Rebranding – The name of the web browser interface for the storage system has changed to PowerVault

Manager. In previous versions of the ME4 Series firmware and documentation, the PowerVault Manager was known as the ME

Storage Manager (MESM).

• Software EULA in CLI – A software End User License Agreement (EULA) is displayed the first time that the CLI is accessed.

• SupportAssist Automated Maintenance Mode and Firmware Updates - If SupportAssist is enabled on an ME4 Series storage

system:

○ The ME4 Series storage system automatically enters and exits maintenance mode during a user-initiated reboot or during a

firmware update.

○ The ME4 Series storage system periodically checks if a firmware update is available. If a firmware update is available, an alert is

generated and it is added to the storage system event log.

Fixed issues in GT280R006-01 firmware

The following issues are fixed in the GT280R006-001 firmware:

NOTE:

The fixed issues in the ME4 Series firmware are cumulative. The latest release of the ME4 Series firmware

contains all of the fixed issues from previous releases of the firmware.

Table 10. Fixed alerts and reporting issues

Issue Description

51822 Suppress events from SupportAssist when the storage system is in manual maintenance mode.

51721 Suppress successful CloudIQ payload messages from the Event Viewer and report only CloudIQ error conditions to

the Event Viewer.

51375 Intermittent failure to download logs using PowerVault Manager.

51165 Added network connection information to the Storage Controller logs.

51124 Corrected the error condition for event 648, which caused the following message to be displayed in the event

viewer:

Failed to initiate sending logs to SupportAssist

SupportAssist logs upload is in progress. Retry after 10-15 minutes.

Table 11. Fixed configuration and hardware issues

Issue Description

51873 The SCSI Product ID and model number fields are blank for Value Array Series storage systems.

GT280R006-01 Firmware 9

Table 11. Fixed configuration and hardware issues (continued)

Issue Description

51770 An IPv6 address is not assigned to the controller when the Auto option is selected from the Source drop-down

menu.

51586 Removed Independent Cache Performance Mode (ICPM) settings.

51080 Added warning message during iSCSI setup when multi-server access is enabled.

Table 12. Fixed installation and update issues

Issue Description

51901 Downgrading an ME4 Series storage system from GT280 firmware to GT275 firmware might fail with the following

error:

PFU was unable to build package

51899 The weekly schedule for firmware updates is set for Sunday at 12 AM. However, the schedule should be set to a

random time.

51677 Drive firmware update is allowed to proceed without displaying a warning about service interruption.

51652 When the Easy Start wizard is used to set up Linear Storage, and the Assign dedicated spares to the disk

group check box is selected in the Manage Spares page, the wizard displays multiple entries for the disk group

name, and the navigation arrows are hidden.

51488 Customers can install, configure, and use unsupported drives on an ME4 Series storage system, until a rescan or

reboot of the storage system occurs.

Table 13. Fixed replication issues

Issue Description

50261 A user interface alignment issue occurs in PowerVault Manager when creating a replication schedule, modifying a

queue policy, or modifying a peer connection.

Table 14. Fixed storage management issues

Issue Description

51783 Fixed an Atomic Test and Set (ATS) related controller reset.

51688 Unable to create a peer connection on a 10Gbase-T iSCSI controller with IPv6 host ports configured.

51431 In rare cases, controller failover might occur due to a PCIe link recovery failure.

51077 All spares are displayed as global spares even when spares are set up as dedicated spares.

50887 When a host without any mapping is created and added to an existing host group, the host gets added to the host

group, but the Mapped flag is set to No.

Known issues in GT280R006-01 firmware

The following are known issues in GT280R006-01 firmware:

Table 15. Known installation and update issues

Issue Description

50140 In rare cases, after installing a firmware bundle, event 235 is logged with details that include Not Ready,

enclosure services unavailable.

Workaround: Quiesce I/O to the storage system and then power cycle the controller enclosure.

10 GT280R006-01 Firmware

Table 16. Known storage management issues

Issue Description

51833 Performance issues with 10Gbase-T controllers and Intel Ethernet Converged Network Adapter X520.

Workaround: Update to the latest version of the Intel Ethernet Converged Network Adapter X520 driver. Then,

disable the interrupts in the Intel Ethernet Converged Network Adapter X520 driver.

49962 PowerVault Manager panels use inconsistent terms for SAS disks:

• MDL and SAS MDL are spinning midline or nearline SAS disks.

• SSD and sSAS are SAS SSDs.

Workaround: None

49055 SLP for IPv6 and DNS is not supported.

Workaround: None

GT280R006-01 Firmware 11

GT280R004-01 Firmware

This section describes the new features, fixed issues, and known issues in the GT280R004-01 firmware release.

Topics:

• New features and enhancements

• Fixed issues in GT280R004-01 firmware

• Known issues in GT280R004-01 firmware

New features and enhancements

The following new features and enhancements are in the GT280R004-01 firmware release:

• Cloud IQ support - Added support to enable CloudIQ on ME4 Series storage systems.

• Enforced California password requirement - Added a requirement that forces a new username and password to be created during

the deployment of ME4 Series storage systems.

• Expanded SupportAssist capabilities - Added the following features to SupportAssist (formerly Phone Home):

○ Customer can opt out of auto case creation with technical support.

○ Customer can place system in Maintenance Mode.

NOTE:

SupportAssist is not enabled by default. For more information about SupportAssist and how to enable it, see

the

Dell EMC PowerVault ME4 Series Storage System Administrator’s Guide

Issues with the opt-out and Maintenance Mode features in SupportAssist are corrected in the GT280R006-01 firmware release.

• Drive error statistics - Drive error statistics are now in the support bundle.

• Extended CLI command for branding expansion enclosures - Extended the branding CLI command to work on ME4 Series

expansion enclosures.

NOTE: This command is for use only with the direction of technical support.

• Fully functional reset to factory default command - Added functionality to the restore defaults command that allows a storage

system to be reset to factory default settings.

NOTE: This command is for use only with the direction of technical support.

• OpenManage Enterprise 3.2 support - Added support for the discovery and monitoring of ME4 Series storage system using

OpenManage Enterprise 3.2. OpenManage Enterprise is a systems management and monitoring application that provides a

comprehensive view of the Dell EMC servers, chassis, storage, and network switches in the enterprise network.

• SSH clients - Due to updated security in this release of the firmware, SSH clients might need to be updated to access the storage

system.

• Symbolic port name for FC switches - Fibre Channel switches now show the storage system device name as ME4.

• VMware support - Added support for VMware vCenter Site Recovery Manager (SRM) 8.1.1 and added support for vCenter Server

6.7 Update 2.

Fixed issues in GT280R004-01 firmware

The following issues are fixed in GT280R004-01 firmware:

NOTE:

The fixed issues in the ME4 Series firmware are cumulative. The latest release of the ME4 Series firmware

contains all of the fixed issues from previous releases of the firmware.

Table 17. Fixed alerts and reporting issues

Issue Description

51054 Event log message for DNS lookup failures is confusing.

50883 An event log is not generated for successful or failed SupportAssist configuration changes.

12 GT280R004-01 Firmware

Table 17. Fixed alerts and reporting issues (continued)

Issue Description

50858 An event log is not generated when enabling SupportAssist, disabling SupportAssist, or modifying SupportAssist

configuration settings in ME Storage Manager.

50247 In ME Storage Manager, disk group historical statistics can be viewed, but not successfully exported.

49875 In rare cases, controller A and controller B can report different health values for an unsupported disk.

49613 If a controller ID LED is turned on and the controller is restarted, the button to turn on the controller ID LED is

disabled even though the LED is not on.

Table 18. Fixed configuration and hardware issues

Issue Description

51212 If a power supply is removed or loses power for more than a minute, the Status/Health indicator on the Ops panel

stays Amber after the condition is corrected.

50686 Running a rescan using ME Storage Manager causes a temporary false temperature sensor error.

50685 ME Storage Manager validation fails on SMTP server when you enter an FQDN instead of an IP.

50204 In rare cases, replacing a controller with DHCP turned off causes the storage controller to have an invalid IPv6

address.

50136 An initializing controller might fail if a partner controller is removed or added during initialization.

50081 ME Storage Manager does not allow spaces in IPv6 addresses.

50045 ME Storage Manager prevents a user from changing an existing IPv6 address that was manually entered using ME

Storage Manager.

50044 ME Storage Manager allows identical IP addresses to be set on both controllers.

50004 A controller might fail to generate a new SSL certificate when the hostname of the storage system changes.

49932 After attempting to change FDE keys twice on a failed disk, the system secured the disks.

49874 A controller module may be killed by its partner controller module.

49467 Creating volume groups in ME Storage Manager might fail or stop on a storage system with a large or maximum

number of volumes.

49261 In the CLI, if an invalid hostname is specified while deleting multiple hosts from a host group. the error message

does not specify the hostname that caused the error.

48310 ME Storage Manager returns an error when you click Turn OFF LEDs without selecting any component.

Table 19. Fixed installation and update issues

Issue Description

51406 A disk group might go offline after a controller firmware update is performed on a storage system that is cabled

incorrectly.

50418 Inserting a controller containing older firmware causes the controller with newer firmware to unexpectedly reboot

after the controller firmware is synchronized.

50196 Messages detailing the progress of the controller firmware update are displayed on the partner controller when

using the Partner Firmware Update (PFU) feature. When the controller firmware update switches to the local

controller, messages stop displaying and the controller firmware update progress is no longer visible.

49945 Network IP settings of a newly inserted controller are incorrect if the following are true:

• The newly inserted controller uses IPv6 addressing.

• The mid-plane is set to static IP addressing.

• The newly inserted controller is set to DHCP.

• A communication issue occurs between the management controller and the storage controller.

49929 In rare cases, a Firmware update failed error message displays while loading controller firmware bundles.

GT280R004-01 Firmware 13

Table 19. Fixed installation and update issues (continued)

Issue Description

49746 Some disk groups are quarantined, and disks are reported as missing after updating firmware for a specific storage

system configuration. The configuration consists of a 2U24 single-controller enclosure, 5U84 expansion enclosures,

maximum pool configuration, and active host I/O and utility I/O.

49548 In rare cases, running the show version CLI command during a firmware update can cause the Management

Controller (MC) to crash. The partner controller MC is not affected.

49482 ME Storage Manager fails to close after performing a controller firmware update.

49390 SNMP events are not being generated during controller firmware updates.

49363 After a failed update to the controller firmware, a controller was left in a down state. Attempting to retrieve logs

failed without an error message.

48673 After performing a controller firmware update, enabling or disabling the chap secret in ME Storage Manager might

fail with the following error:

“Failed to set the iSCSI parameters. An internal timeout occurred. Host link

reset did not complete”

Table 20. Fixed replication issues

Issue Description

50963 Jumbo frames are not working when replicating between 10Gbase-T iSCSI controllers.

50962 Unable to consistently set up replication sets.

50927 The 10Gbase-T iSCSI replication option does not work as expected.

50268 In rare cases, replication schedules and replication operations do not initiate after modifying an iSCSI CHAP secret.

This issue is due to the queued replication getting stuck, causing replication sets to remain in a continuous Ready

state and preventing future replications from occurring.

50266 In ME Storage Manager, modifications to replication sets might timeout after disabling iSCSI CHAP on a storage

system that is heavily loaded.

50255 In ME Storage Manager, the following error might be displayed when a replication schedule creates a snapshot for a

secondary volume:

WARNING A replication snapshot failed to be created

49750 With I/O running, shutting down a controller immediately after initiating an add disk group action can cause a

controller to stop responding.

49722 The create snapshots CLI command allows one or more spaces to be set as a snapshot name.

49705 With single-controller mode enabled and I/O running, using the CLI to change a volume cache write policy to write-

through can cause the controller to crash.

49412 In the CLI, the delete host-group command interprets the host-group name “d” or “D” as an abbreviation for

the parameter delete-hosts.

49209 In rare cases, a controller module can fail while running scheduled replication.

49181 In rare cases, a replication operation can fail with the message Error: The requested operation is not

allowed for the current state of the virtual replication set. An attempt to resume

replication fails with the message Error: The operation cannot be completed because

controller failover or recovery is in progress.

49070 When a replication set is created in ME Storage Manager, the replication schedule window is not displayed when

the Scheduled check box is selected.

49020 When a volume-copy operation is in progress, trying to delete the destination volume causes the improper message

Error: Bad parameter(s) were specified to be displayed.

48923 When a replication set is created in ME Storage Manager, a warning message might be displayed even if the

command is successful and the replication set is created.

14 GT280R004-01 Firmware

Table 21. Fixed storage management issues

Issue Description

51509 Pool A might go offline after a taking a snapshot.

51311 When creating a Linear disk group in ME Storage Manager, selecting the Select All check box might result in an

error message about too many disks selected to expand.

51221 In ME Storage Manager, the chunk size drop-down menu is not available when creating a disk group.

51189 A storage system in single-controller mode might send Killed partner events during every boot.

51078 A single ADAPT disk group might remain offline after a power failure due to disks failing come online.

51071 In ME Storage Manager, the Storage Setup panel displays the wrong suffix in the Size column.

51022 Improved drive reliability by instructing the storage system to fail a drive and start a rebuild action if the drive

experiences six read errors in an hour.

51003 ME Storage Manager cannot update network IPs for single-controller storage systems.

50925 In the CLI, the set network-parameter IP command does not work for single-controller storage systems.

50865 In the CLI, the set host-port-mode command displays both FC and iSCSI options for 10Gbase-T iSCSI controllers.

50864 Dell switches fail to report as Dell devices for Register Symbolic Port Name (RSPN_ID) requests.

50863 In ME Storage Manager, the option to change between iSCSI and FC host port mode is not functioning correctly.

50849 In the CLI, the output of the ping command is misleading.

50826 ATS is now supported on the 10Gbase-T iSCSI controller.

50419 ME Storage Manager might continue to display a volume after it is deleted.

50223 In ME Storage Manager with the German locale enabled, some text overruns buttons and some field labels are in

English.

50182 The browser tab title displays an incorrect vendor name whenever the restore defaults or reset dns-

management-hostname CLI commands are used. This issue occurs if a custom DNS hostname was configured

before issuing the commands.

50133 In ME Storage Manager, setting DNS parameters to the same values that are already set fails with the error

Command is taking longer to complete than anticipated.

50115 In ME Storage Manager, the Performance topic does not display performance data for virtual pools.

50046 In ME Storage Manager, changing a user password and selecting another user without first applying the change

causes the confirmation dialog to behave unexpectedly.

49948 After restarting the Storage Controller, an ME Storage Manager session can stop responding.

49934 Exporting historical statistics might fail when using ME Storage Manager in Internet Explorer.

49863 DNS settings remain unchanged after issuing the clear dns-parameters CLI command, despite the system

displaying a success message.

49738 In an empty CLI command line, pressing Tab displays inapplicable commands, such as FTP commands.

48631 In ME Storage Manager, if the system time is changed from 24–hour to 12–hour mode (AM or PM), the change

does not persist to the next session.

Table 22. Fixed user management issues

Issue Description

50903 Unable to use SMTP server name after DNS configuration.

50202 User role modification in ME Storage Manager might fail with the following error:

Unable to modify the user. An invalid role was specified.

50172 When both email notification and syslog parameters are set, email notifications are reported using the syslog

notification level settings instead of the email notification level settings.

GT280R004-01 Firmware 15

Table 22. Fixed user management issues (continued)

Issue Description

49517 The Managed Logs feature requires you to set up SMTP and email notifications before the system can send test

information to the logfile. For more information, see the topic about setting system notification settings in the Dell

EMC ME4 Series Storage System Administrator's Guide.

Known issues in GT280R004-01 firmware

The following are known issues in GT280R004-01 firmware:

Table 23. Known installation and update issues

Issue Description

50140 In rare cases, after installing a firmware bundle, event 235 is logged with details that include Not Ready,

enclosure services unavailable.

Workaround: Quiesce I/O to the storage system and then power cycle the controller enclosure.

Table 24. Known storage management issues

Issue Description

51688 Unable to create a peer connection on a 10Gbase-T iSCSI controller with IPv6 host ports configured.

Workaround: Do not use IPv6 with replication on 10Gbase-T iSCSI controllers.

51431 In rare cases, controller failover might occur due to a PCIe link recovery failure.

Workaround: None

NOTE: This issue is fixed in GT280R006-01 firmware.

49962 ME Storage Manager panels use inconsistent terms for SAS disks:

• MDL and SAS MDL are spinning midline or nearline SAS disks.

• SSD and sSAS are SAS SSDs.

Workaround: None

49055 SLP for IPv6 and DNS is not supported.

Workaround: None

16 GT280R004-01 Firmware

GT275R005-04 Firmware

This section describes the new features, fixed issues, and known issues in the GT275R005-04 firmware release.

Topics:

• New features and enhancements

• Fixed issues in GT275R005-04 firmware

• Known issues in GT275R005-04 firmware

New features and enhancements

The following new feature is in the GT275R005-04 firmware release:

SupportAssist - Dell EMC SupportAssist provides an enhanced support experience for ME4 Series arrays by sending configuration and

diagnostic information to Dell EMC at regular intervals. Dell EMC analyzes this data and automatically performs health checks. If issues are

detected that require attention, support cases are opened automatically, immediately starting the process to troubleshoot and resolve the

issue. These issues can often occur before storage administrators even notice that there is a problem.

NOTE: SupportAssist is not enabled by default. For more information about SupportAssist and how to enable it, see the

Dell EMC ME4 Series Storage System Administrator’s Guide

Fixed issues in GT275R005-04 firmware

The following issue is fixed in GT275R005-04 firmware:

Table 25. Fixed user management issue

Issue Description

50629 After running the restore defaults CLI command, Telnet displayed as disabled but the port was still open.

Known issues in GT275R005-04 firmware

The following are known issues in GT275R005-04:

Table 26. Known alerts and reporting issues

Issue Description

50247 In ME Storage Manager, disk group historical statistics can be viewed, but not successfully exported.

Workaround: None

NOTE: This issue is fixed in GT280R004-01 firmware.

49875 In rare cases, controller A and controller B can report different health values for an unsupported disk.

Workaround: None needed; unsupported disks cannot be used.

NOTE: This issue is fixed in GT280R004-01 firmware.

Table 27. Known hardware and configuration issues

Issue Description

50686 Running a rescan using ME Storage Manager causes a temporary false temp sensor error.

Workaround: This health issue resolves itself and does not generate an event in the logs.

GT275R005-04 Firmware 17

Table 27. Known hardware and configuration issues (continued)

Issue Description

NOTE: This issue is fixed in GT280R004-01 firmware.

50685 ME Storage Manager validation fails on SMTP server if you enter an FQDN instead of an IP.

Workaround: Enter a valid IP address, or use the CLI.

NOTE: This issue is fixed in GT280R004-01 firmware.

50204 Rarely, replacing a controller with DHCP turned off causes the Storage Controller to have an invalid IPv6 IP

address.

Workaround: Do the following from the controller that was not replaced:

1. Add the IPv6 address.

2. Set the correct IPv4 network parameters.

3. In the CLI run restart mc <ID> where <ID> is the replaced controller. For example, to restart controller B,

run restart mc b.

NOTE: This issue is fixed in GT280R004-01 firmware.

49874 A controller module was killed by its partner.

Workaround: Restart the controller module.

NOTE: This issue is fixed in GT280R004-01 firmware.

49932 After attempting to change FDE keys twice on a failed disk, the system secured the disks.

Workaround: Remove failed disks from the system, and replace them with new ones.

NOTE: This issue is fixed in GT280R004-01 firmware.

48310 ME Storage Manager returns an error if you click Turn OFF LEDs without selecting any component.

Workaround: You can click OK and ignore the error, or select a component with LEDs on and click Turn OFF

LEDs.

NOTE: This issue is fixed in GT280R004-01 firmware.

Table 28. Known installation and update issues

Issue Description

50418 Inserting a controller containing older firmware causes the controller with newer firmware to unexpectedly reboot

after the firmware is synchronized.

Workaround: None needed. The automatic reboot fixes the issue.

NOTE: This issue is fixed in GT280R004-01 firmware.

50140 In rare cases, after installing a firmware bundle, event 235 is logged with details that include Not Ready,

enclosure services unavailable.

Workaround: Quiesce I/O to the storage system and then power cycle the controller enclosure.

49945 Network IP settings of a newly inserted controller are incorrect if the following are true:

• The newly inserted controller uses IPv6 addressing.

• The mid-plane is set to static IP addressing.

• The newly inserted controller is set to DHCP.

• A communication issue occurs between the management controller and the storage controller.

Workaround: Set up the new controller IP addresses manually. See the topic about configuring controller network

ports in the Dell EMC ME4 Series Storage System Administrator's Guide.

NOTE: This issue is fixed in GT280R004-01 firmware.

18 GT275R005-04 Firmware

Table 28. Known installation and update issues (continued)

Issue Description

49746 Some disk groups are quarantined, and disks are reported as missing after updating firmware for the following

storage system:

A 2U24 controller enclosure with a single controller module, 5U84 expansion enclosures, a maximum pool

configuration, and active host I/O and utility I/O,

Workaround: Do the following:

1. Before upgrading the firmware, ensure that any disk group reconstruction and online/offline initialization

operations are complete.

2. Quiesce I/O and stop scrub utilities.

3. Power off the controller enclosure.

4. Power cycle all expansion enclosures.

5. Power on the controller enclosure and wait for the disk groups to dequarantine and rebuild.

NOTE: This issue is fixed in GT280R004-01 firmware.

49548 In rare cases, running the show version CLI command during a firmware update can cause the Management

Controller (MC) to crash. The partner controller MC is not affected.

Workaround: None needed. The MC restarts automatically.

NOTE: This issue is fixed in GT280R004-01 firmware.

49363 After a failed code load, a controller was left in a down state. Attempting to retrieve logs failed without an error

message.

Workaround: None.

NOTE: This issue is fixed in GT280R004-01 firmware.

Table 29. Known replication issues

Issue Description

50268 Rarely, replication schedules and replication operations do not initiate after modifying an iSCSI CHAP secret. This

issue is due to the queued replication getting stuck, causing replication sets to remain in a continuous Ready state

and preventing future replications from occurring.

Workaround: Stop the replication, then clear the replication queue using theclear replication-queue CLI

command.

NOTE: This issue is fixed in GT280R004-01 firmware.

49750 With I/O running, shutting down a controller immediately after initiating an add disk group action can cause a

controller to stop responding.

Workaround: None needed, the controller module restarts automatically.

NOTE: This issue is fixed in GT280R004-01 firmware.

49722 The create snapshots CLI command allows one or more spaces to be set as a snapshot name.

Workaround: None.

NOTE: This issue is fixed in GT280R004-01 firmware.

49705 With single-controller mode enabled and I/O running, using the CLI to change the cache write policy of a volume to

write-through can cause the controller to crash.

Workaround: Before changing the write policy for a volume in a single-controller mode, quiesce I/O.

NOTE: This issue is fixed in GT280R004-01 firmware.

49412 In the CLI, the delete host-group command interprets the host-group name “d” or “D” as an abbreviation for

the parameter delete-hosts.

GT275R005-04 Firmware 19

Table 29. Known replication issues (continued)

Issue Description

Workaround: Use the delete hosts command instead.

NOTE: This issue is fixed in GT280R004-01 firmware.

49209 In rare cases, a controller module can fail while running scheduled replication.

Workaround: None needed, the controller module automatically restarts.

NOTE: This issue is fixed in GT280R004-01 firmware.

49181 In rare cases, a replication operation can fail with the message Error: The requested operation is

not allowed for the current state of the virtual replication set. An attempt to resume

replication fails with the message Error: The operation cannot be completed because

controller failover or recovery is in progress.

Workaround: Restart the controller modules in the secondary system. Restart each controller module individually

to maintain system availability.

NOTE: This issue is fixed in GT280R004-01 firmware.

49020 When a volume-copy operation is in progress, trying to delete the destination volume causes the improper message

Error: Bad parameter(s) were specified to appear.

Workaround: Wait for the volume-copy operation to finish, and then delete the volume.

NOTE: This issue is fixed in GT280R004-01 firmware.

Table 30. Known storage management issues

Issue Description

50419 A deleted volume remains shown in the MESM.

Workaround: Refresh the browser. The deleted volume is no longer shown.

NOTE: This issue is fixed in GT280R004-01 firmware.

50223 In ME Storage Manager with the German locale enabled, some text overruns buttons and some field labels are in

English.

Workaround: Remove the failed disks from the system and replace them with new disks.

NOTE: This issue is fixed in GT280R004-01 firmware.

50182 The browser tab title displays an incorrect vendor name whenever the restore defaults or reset dns-

management-hostname CLI commands are used. This issue occurs whether a custom DNS hostname was

configured or not before issuing the commands.

Workaround: Manually set the DNS management hostname by doing one of the following:

• In the CLI: Use the reset dns-management-hostname command.

• In the MESM: From the Home topic, choose Actions > System Settings > Network, then change the

Hostname on the DNS tab.

NOTE: This issue is fixed in GT280R004-01 firmware.

50133 In ME Storage Manager, setting DNS parameters to the same values that are already set fails with the error

Command is taking longer to complete than anticipated.

Workaround: None. When parameters are set to different values, as is typically the case, the issue does not occur.

NOTE: This issue is fixed in GT280R004-01 firmware.

50115 In ME Storage Manager, the Performance topic does not display performance data for virtual pools.

Workaround: Use the CLI show pool-statistics command instead.

20 GT275R005-04 Firmware

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