Release Notes

Table 34. Known installation and update issues (continued)
Issue Description
● 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.
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 35. 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.
GT275R005-04 Firmware 21