February 6, 20251 yr Hi My 512GB cache drive failed and I have replaced it with a new 1TB drive but I now have no VM's or Docker instances. The old cache drive is completely failed as I tried to run spinwrite on it in another system and it is not even recognised. What i'd like to do now is figure out why this has happened and so have attached my diagnostics. I must have misconfigured my system that has left me in this very undesirable state. I guess I dont really know how best to configure a cache drive for best performance but also some level of redundancy. Should I for example have a copy of my VM instances on the array and how is that achieved ? I dont have room for a second cache drive but if need be I could buy a bigger driver to replace 2 or more of of the existing drives to make room for a second cache drive for a pool ?? Appreciate any insights ironside-diagnostics-20250207-0607.zip
February 7, 20251 yr Community Expert For the VMs you would need to have a backup of the vdisks and also libvirt.img, for Docker you would need the appdata.
February 9, 20251 yr Author Thanks for that answer. I have an offsite backup that I should be able to get those 3 things from. A follow on question is how I should make use of the cache drive in future am I using it correctly and if so should i then be creating a cache pool for redundancy.?
February 10, 20251 yr Community Expert A mirrored pool is a good option that will protect against a device failure, but you still need backups.
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