Dell EMC Unity: DAE X X Disk XX is resynchronizing with the system
Summary: Dell EMC Unity: DAE X X Disk XX is resynchronizing with the system (Dell EMC Correctable)
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This article is not tied to any specific product.
Not all product versions are identified in this article.
Symptoms
Many intermittent alerts mention that the system is degraded due to a disk resynchronizing, however after few mins, that disk is back again to normal state, and the system is changed from degraded to OK.
The behavior is observed on many different disks.
These disks do not go to faulted state, only resyncing and back again to normal.
Cause
This is a known issue in the Hitachi Aries-K Plus drives firmware.
Resolution
It is announced that the fix will be available in the Drive Firmware: NAM4.
Please upgrade the Frimware of the Hitachi drives to NAM4 once the upgrade is available.
Please upgrade the Frimware of the Hitachi drives to NAM4 once the upgrade is available.
Additional Information
You should See alerts on GUI or CLI as below Example:
B 01/19/18 00:41:47.391 Health 6025c [WARN] User: DAE 0 5 Disk 1 is resynchronizing with the system
B 01/19/18 00:41:47.463 Health 6032d [WARN] User: Storage pool HLUNT500_Pool01 is degraded.
B 01/19/18 00:41:47.793 Health 60515 [WARN] User: System ISR-HOL-Unity500 has experienced one or more problems that have left it in a degraded state
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B 01/19/18 00:46:57.152 Health 6025b [INFO] User: DAE 0 5 Disk 1 is operating normally
B 01/19/18 01:17:10.775 Health 6025c [WARN] User: DAE 0 5 Disk 12 is resynchronizing with the system
B 01/19/18 01:17:10.998 Health 60515 [WARN] User: System ISR-HOL-Unity500 has experienced one or more problems that have left it in a degraded state
B 01/19/18 01:17:11.060 Health 6032d [WARN] User: Storage pool HLUNT500_Pool01 is degraded.
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B 01/19/18 01:18:20.006 Health 6025b [INFO] User: DAE 0 5 Disk 12 is operating normally
B 01/19/18 00:41:47.391 Health 6025c [WARN] User: DAE 0 5 Disk 1 is resynchronizing with the system
B 01/19/18 00:41:47.463 Health 6032d [WARN] User: Storage pool HLUNT500_Pool01 is degraded.
B 01/19/18 00:41:47.793 Health 60515 [WARN] User: System ISR-HOL-Unity500 has experienced one or more problems that have left it in a degraded state
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B 01/19/18 00:46:57.152 Health 6025b [INFO] User: DAE 0 5 Disk 1 is operating normally
B 01/19/18 01:17:10.775 Health 6025c [WARN] User: DAE 0 5 Disk 12 is resynchronizing with the system
B 01/19/18 01:17:10.998 Health 60515 [WARN] User: System ISR-HOL-Unity500 has experienced one or more problems that have left it in a degraded state
B 01/19/18 01:17:11.060 Health 6032d [WARN] User: Storage pool HLUNT500_Pool01 is degraded.
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B 01/19/18 01:18:20.006 Health 6025b [INFO] User: DAE 0 5 Disk 12 is operating normally
Affected Products
Dell EMC Unity FamilyProducts
Dell EMC Unity FamilyArticle Properties
Article Number: 000050366
Article Type: Solution
Last Modified: 22 Oct 2025
Version: 4
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