[Discuss] SSD drives vs. Mechanical drives

[Richard Pieri]

Dan Ritter wrote:
> 3Ware tw_cli man page:
> 
>  Verify activity attempts to verify all units based on their unit
>  type. Verifying RAID-1 involves checking that both drives contain the

It doesn't work reliably. If the data is corrupted somewhere in the
controller itself (flakey cache for example) then the checksums will be
correct but the data that is written and checked is wrong. I've had a
3Ware controller do this to me. All of the checksums matched up but the
data was damaged prior to the calculations and writes. Correctly written
and replicated wrong data is still wrong data. :P

-- 
Rich P.