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scv2020 cannot enable cache
Hello,
at our university we have an old Dell scv2020 storage that we use as secondary storage.
The last year, both batteries went off, so the cache was automatically disabled.
Specifically since then we have two alerts (one for each controller) with the text: an unrecoverable problem was found with caching hardware on controller XXXX during system startup.
Also the cache cards status was at off status.
A few days ago, we managed to buy two batteries to replace the broken ones. After replacing the batteries
both cache cards went UP (fully charged).
The problem is that the alerts remains even i shutdown and restart the entire storage.
Under the Storage Settings we still see a message in red saying: write cache is current down on the storage center.
Any ideas, what can i do to restore cache(write/read)??
The storage of course is EOL.
Regards,
akops
DELL-Chris H
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September 30th, 2024 15:12
Akopsuniwa,
I believe this is something that you have to work with support on, as it isn't just a simple fix and requires reviewing the logs and outputs of certain commands to identify the specific path to resolve, but lets start by checking a couple of things.
What version of SCOS are you using?
Is the firmware up to date?
Do you see any reference to BMC in the errors?
Let me know what you see.
akopsuniwa
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September 30th, 2024 16:45
Hello,
The system is EOL, so Dell support is not an valid option anymore.
The system is running SCOS 7.3.20.19. The specific version was chosen 4 year ago by DELL Support (we had active support at 2020) due to possible compatibility issues with the connected fiber switches.
Regarding BMC, i did find anything in the logs.
By the way, when i connect through console to the storage and run the: "cache status" command
i see the below output.
Normal
==== ========== ========== ========== ========== ========== ========== ========== ============================== ==========
1 (1) Enable (1) Enable (2) Down (1) Up (1) Enable (1) Enable 10 Write cache enabled but not up (0) Extern
Walk: Display 1 of 1
akops
(edited)
DELL-Chris H
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September 30th, 2024 20:13
There have been numerous firmware updates that address these issues. What I would recommend is to update the SCOS firmware, since it is not at the expected level for the SCOS version: 7.4.21 is the minimum that is expected, but I would update to the latest available.