First post here having browsed the answers on the forums for quite a while. Always a great knowledge base!
I have the following setup, and would like advice on best backup strategy, using Windows 7 to create the volumes:
- 6 x 3 TB drives for storage = 18 TB total
- 2 x 8 TB Seagate Archive drives + 2 x 1 TB drives for backup =18 TB total
I plan to use either FreeFileSync or SyncToy to periodically do a file-for-file copy from storage to backup. Basically, I've had non-backed-up drives fail in the past resulting in lost data, so I just want the backup to be cold storage so I can retrieve my files in the event that storage fails.
I'm thinking of striping the 6 storage drives for performance/ease of having all data on a single volume, but don't think doing the same for backup drives is a good idea.
My options (as far as I can see, but am open to suggestions):
- I could stripe the 4 backup drives to have an 18 TB volume for storage with 18 TB for backup, but this isn't a good idea because with 4 drives, the backup volume will be 4 times more likely to fail.
- Would spanning the 4 backup drives be advisable so that I can have a 1:1 storage to backup relationship of 18 TB storage to 18 TB backup, or would having the 4 backup drives as simple volumes be better?
- The problem I see with simple volumes is that I would need to manually split the 18 TB of storage into chunks of 8+8+1+1 for the backup.
Also, if I do go with striped for storage and spanned for backup, is this still risky if, for example, there's a problem with the raid controller - would I lose storage AND backup in that case? Basically, I'm OK with storage using striping/RAID 0 as long as the backup is reliable in the event storage fails. What I don't want is potential for storage AND backup to fail.
Would appreciate any advice, thanks in advance.