Greetings,

I'm hoping someone can assist us.

Background:

We have a Dell PowerVault 3400 with 6x 1.92 Tb SSD drives and two RAID Controller Modules. The RAID Controller Module Firmware is 08.25.14.60. It repeatedly will switch its status to "Storage Array Needs Attention". When clicking the link to see the details in the Recovery Guru, the summary states it is "Virtual Disk Not On Preferred Path".

I followed this thread https://www.dell.com/community/DELL-EMC-Storage-Forum/DELL-Power-vault-MD3420-Virtual-disk-not-on-preferred-path-error/td-p/5155934 and followed the advice presented there:

I've verified the controller firmware is up to date and updated the drive firmware.

Issue:

Below is the main issue I'm asking for assistance on...

I can clear the error temporarily by going to Storage | Virtual Disk | Advanced | Redistribute Virtual Disks and the error will clear.

The error will return within a couple hours. Here is an example from yesterday where I redistributed the disks (starting with event sequence number 3737 @2:14:31 PM and it returning with sequence number 3749 @4:06:33 PM)

Below I have the Event Log Entries I think have details that may be helpful. What other information can I provide to paint a clear picture of the issue?

Thanks in advance!

Jeff

Event Log Entries:

Date/Time: 11/5/19 2:14:31 PM
Sequence number: 3737
Event type: 210A
Event priority: Informational
Description: Cache not enabled
Event specific codes: 0/0/0
Event category: Internal
Component type: RAID Controller Module
Component location: Enclosure 0, Slot 0
Logged by: RAID Controller Module in slot 0

Date/Time: 11/5/19 2:14:31 PM
Sequence number: 3738
Event type: 212C
Event priority: Informational
Description: Virtual disk write-back caching restored
Event specific codes: 0/0/0
Event category: Internal
Component type: RAID Controller Module
Component location: Enclosure 0, Slot 0
Logged by: RAID Controller Module in slot 0

Date/Time: 11/5/19 2:14:31 PM
Sequence number: 3739
Event type: 104
Event priority: Informational
Description: Needs attention condition resolved
Event specific codes: 0/0/0
Event category: Internal
Component type: RAID Controller Module
Component location: Enclosure 0, Slot 0
Logged by: RAID Controller Module in slot 0

Date/Time: 11/5/19 2:14:31 PM
Sequence number: 3740
Event type: 502A
Event priority: Informational
Description: Virtual disk ownership assigned
Event specific codes: 0/0/0
Event category: Command
Component type: Virtual Disk
Component location: Virtual Disk VD1
Logged by: RAID Controller Module in slot 0

Date/Time: 11/5/19 2:14:31 PM
Sequence number: 3742
Event type: 210A
Event priority: Informational
Description: Cache not enabled
Event specific codes: 0/0/0
Event category: Internal
Component type: RAID Controller Module
Component location: Enclosure 0, Slot 1
Logged by: RAID Controller Module in slot 1

Date/Time: 11/5/19 2:14:31 PM
Sequence number: 3743
Event type: 212C
Event priority: Informational
Description: Virtual disk write-back caching restored
Event specific codes: 0/0/0
Event category: Internal
Component type: RAID Controller Module
Component location: Enclosure 0, Slot 1
Logged by: RAID Controller Module in slot 1

Date/Time: 11/5/19 4:06:32 PM
Sequence number: 3744
Event type: 210A
Event priority: Informational
Description: Cache not enabled
Event specific codes: 0/0/0
Event category: Internal
Component type: RAID Controller Module
Component location: Enclosure 0, Slot 1
Logged by: RAID Controller Module in slot 1

Date/Time: 11/5/19 4:06:32 PM
Sequence number: 3745
Event type: 212C
Event priority: Informational
Description: Virtual disk write-back caching restored
Event specific codes: 0/0/0
Event category: Internal
Component type: RAID Controller Module
Component location: Enclosure 0, Slot 1
Logged by: RAID Controller Module in slot 1

Date/Time: 11/5/19 4:06:32 PM
Sequence number: 3746
Event type: 210A
Event priority: Informational
Description: Cache not enabled
Event specific codes: 0/0/0
Event category: Internal
Component type: RAID Controller Module
Component location: Enclosure 0, Slot 0
Logged by: RAID Controller Module in slot 0

Date/Time: 11/5/19 4:06:33 PM
Sequence number: 3747
Event type: 212C
Event priority: Informational
Description: Virtual disk write-back caching restored
Event specific codes: 0/0/0
Event category: Internal
Component type: RAID Controller Module
Component location: Enclosure 0, Slot 0
Logged by: RAID Controller Module in slot 0

Date/Time: 11/5/19 4:06:33 PM
Sequence number: 3748
Event type: 2044
Event priority: Informational
Description: Virtual disk I/O shipping implicit transfer
Event specific codes: 0/0/0
Event category: Internal
Component type: Virtual Disk
Component location: Virtual Disk VD1
Logged by: RAID Controller Module in slot 0

Date/Time: 11/5/19 4:11:32 PM
Sequence number: 3749
Event type: 4011
Event priority: Warning
Description: Virtual disk not on preferred path due to failover
Event specific codes: 0/0/0
Event category: Error
Component type: RAID Controller Module
Component location: Enclosure 0, Slot 1
Logged by: RAID Controller Module in slot 1

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