I have four 8TB drives and one 6TB drive. I have a NAS with 4 SATA Ports and I’ll have an off site backup computer.
Thing is I need to decided what drives to put where. Currently I have about 2-3TB that needs to be backed up. That will grow in the future probably.
Using TrueNAS community running on proxmox and still undecided what the offsite will due since not sure how to backup TrueNAS in a VM yet.
But what would be the best way to divide up the drives ya’ll? Need to start backing up my photos lol
HARDWARE
NAS
- Asrock H510-HDV/M.2
- i3-10305
- 32 GB RAM
OFFSITE BACKUP
- HP Z440 w/ a bunch of sata ports and i think like a 16 core CPU
If this helps I dont really need performance
Resiliency would point towards raidz2, raidz3 or 3-way mirrors.
Capacity would point towards 6- to 10-wide raidz2 (or z3).
Both will not fit together with a 4-port NAS and a set of 5 drives.
If “divide” means that the set of 5 is to serve both NAS, there’s no solution at all. You can have a 3-way mirror with 3*8 TB and 6+8 TB as a mirror for backup: The primary is resilient, with limited capacity; the backup hasn’t much of both.
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I think I hear you, so you’re saying Rob a bank > use the money to buy more drives. copy
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@etorix is a dinosaur who is sadly behind the times. 
He doesn’t understand the better and more efficient way to build ZFS pools.
A better option
AnyRaid 
With AnyRaid™, you can throw four hard drives together that are 1TB, 4TB, 3TB, and 12TB, which will yield a pool with a total usable capacity of 64TB, where your data is safe even if all four drives fail.
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