vSAN triggered alarm appearing from time to time

[SkyGoh]

Hi VMware Community,

Would require help to resolve these triggered alarm that has been on and off from time to time.

Tried searching through for solution but was unable to find a permanent solution.

Would appreciate if anyone could give me more information on this. :smileycry:

[TheBobkin]

Hello SkyGoh

There is actually a handy button on every vSAN Health check that tells you more information about what can trigger it and what can help resolve it - I advise you read these. Cluster > Monitor > vSAN > Health > Retest , then it is just a case of looking at the drop-down triggered alarms you are interested in and clicking the 'ask VMware' button which will redirect to the specific kb article.

e.g.

https://kb.vmware.com/s/article/2108691

In your case you are likely: a) running unsupported hardware/driver/firmware on controller/disks b) have transient or permanent failing drives (either due to a) or physically failing) c) are exceeding 80% used of your vsanDatastore (potentially due to a) and/or b) ) d) have disks with more than 30% capacity used disparity (potentially due to b) if transient and coming back with no usable data and thus functionally blank).

Bob

[SkyGoh]

Hi Bob,

Thank you for your advice, I did read through the reason for the warnings and even source for answers before posting my problems here.

As I do not understand the reason for constant appearance of these warnings even after multiple different attempt of fixes.

Thank you for your guide towards a correct directions. At the very least now I do not have to dive in blindly.

Regards

Sky