SSD cache not available

[turing]

I purchased two brand-new Western Digital Red SN700 500GB SSD cards and installed them in my T12-450 without any problems.
The appear in the Control Panel > Hard Drive > Hard Drive panel as 'NVME Disk_sdza' and 'NVME Disk_sdzb' with a 'Normal' status.
However, there's now a Hyper Cache entry 'SSD Cache 1' that is reporting a 'RAID error' with no details and any attempt to delete the entry results in an 'Operation failed!' message with no details.
Also, the Control Panel > Volume > Edit panel does not display a button to enable SSD cache, despite the documentation stating that this will be displayed.
What can I do to enable SSD cache?
Do I need to replace brand-new, fully-functional and recommended SSD cards or does SSD cache not work on a T12-450?

[TMzethar]

Are you combining two SSDs into one SSD Hyper Cache RAID?
Regarding the "edit button" for enabling SSD Cache, this is applicable to TOS4.
To delete HyperCache, you need to disable all file services, capacity, applications, indexes, etc. that may occupy the volume
Please disable them before attempting again.

please generate and download the log report in TOS > Technical Support > Report Issues, and then send it to us as a network disk sharing link for analysis. This allows us to better and faster judge the problem and come up with a solution.

[turing]

Thanks to Terra-Master support, this was resolved by connecting to the T12-450 via SSH and issuing a series of commands.

[BLRus]

A similar situation.
I was reinstalling TOS (5.1.103) on SSD (NVME Disk_sdza). But before that, two SSDs into one SSD Hyper Cache RAID. Before resetting the factory settings and reinstalling TOS, I did not delete the RAID on the SSD.
Can you tell me how to bring SSD (NVME Disk_sdzb) back to life? I can't do anything with him right now.

[TMzethar]

{L_BUTTON_AT}BLRus

I'm not quite sure what specific problem you encountered.
The Hyper Cache disk cannot be used as a system installation or storage disk while serving as a cache.
If you install TOS on the NMVe SSD drive, this will format and clear the Hyper Cache settings located on the NMVe SSD drive.

[BLRus]

{L_BUTTON_AT}TMzethar

I had 2 SSDs in RAID Hyper Cache. Then I put the TOS on one of the disks - NVME Disk_sda. NVME Disk_sdb remained part of the RAID Hyper Cache. I understand that it now needs to be extracted and formatted. It is visible in the system, but I can't do anything with it. Is there nothing you can do with TOS (SSH/Telnet)?

[TMzethar]

{L_BUTTON_AT}BLRus

Hi, Assuming one of your HHDs is sda, and your NVMeSSD with TOS installed is sdza. Regarding the specific corresponding disk, please enter and confirm:

Code: Select all

lsblk

Add the partitions of your HDD to the system arrays:

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mdadm -a /dev/md9 /dev/sda2
mdadm -a /dev/md8 /dev/sda3

Wait for 3 minutes... Then detach the NVMe SSD from the system array:

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mdadm - f /dev/md9 /dev/sdza2
mdadm - f /dev/md8 /dev/sdza3
mdadm - r /dev/md9 /dev/sdza2
mdadm - r /dev/md8 /dev/sdza3

Then you should be able create cache with the NVMe SSD.