Best Storage strategy moving forward

[monovitae]

I've got two freeNAS boxes one of which replicates to a backup box. The backup box is literally just that it receives replicated snapshots on a nightly basis off-site and sits.

On this backup box it currently has 4 WD 6TB reds arranged in a raid z2.

I stupidly let it fill up to the point where replication began to fail. As such I've overnight-ed 4 more 6TB WD reds for delivery tomorrow. Question is, given the pure backup purpose of this box and that I can trivially bring it back on site to a GB Ethernet connection should i expand the pool, or nuke it and start from scratch. And if i nuke it should I go with 8x6TB Z2 or some other raid arrangement.

 

[Sakuru]

I would start from scratch and go to an 8 disk RAIDZ2. You don't need the performance or extra redundancy that 2 RAIDZ2s give you for a replication target.

 

[Robert Trevellyan]

should I go with 8x6TB Z2 or some other raid arrangement

How fast is your data growing? Might consider RAIDZ3.