On 1/29/2023 4:45 PM, Charlie Brown wrote:
> RAID 1 does mirror the drives, so that is effectively a backup strategy *for
> the failure of one drive*, but if the RAID controller goes wonky (as is
> apparently the case here), then it can corrupt data both drives, so you do need
> a totally separate backup that does not involve the RAID controller.
How does having a RAID act as a backup if you DELETE THE FILE?
A *backup* lets you recover a file that you accidentally (or,
inappropriately) deleted. Or altered. RAID (any level) will
cheerfully delete (or alter) all signs of the file from all media
involved.
RAID just protects against drive failures. You can lose data for
any number of reasons (including the above) and RAID won't help
you at all. But, a BACKUP will!