I was building my lab with VSAN backed storage – because I did not have a compatible RAID card I grouped the disks as a RAID-0 and presented it to VSAN. It worked and worked well – VSAN saw one big disk of about 1.6 TB (Had three disks worth 550GB each).

I was advised that it was a bad idea – because if the data got striped by the RAID controller and if one disk goes bad – VSAN now is stuck with missing and corrupted disk.

The proper way to do this was to have a RAID-0 on per disk and present all these individual disk volumes to VSAN to participate in a disk group. I went back and did that and boy am I glad that I did.

Today this happened

The fix was easy – Just highlight the disk and click on actions to remove the disk from the disk group. Depending on the failure you might be able to recover the data 

Thanks to Luke Huckaba – @thephuck for pointing it out in my lab which saved me hours of work later.

Now time to setup SPBM to avoid multiple failures 😀