Here is my scenario:
- 2 x HDD configured as RAID
- 1 x HDD as JBOD
- 1 x free drive bay
- 1 x off-site HDD which is periodically swapped in the JBOD slot
- Incremental backups scheduled nightly; RAID -> JBOD
Now, suppose my server is consumed in a fire, I still have my off-site backup HDD, but a PR NAS is not available for whatever reason. In what ways can I recover from that off-site drive?