Two ZFS1 or One ZFS2 pool for 10 drives?

[AVB]

I'll be upgrading my NAS with a new case and more drives soon. Since I'm going to rebuild the whole thing I was trying to figure out if I would be better off having two ZFS1 pools of five drives each or one ZFS2 pool of 10 drives. I haven't found anything that really says one way is better than the other so I thought it was time to ask the experts in the community for their opinion. This is strictly a media server for movies, music and some pictures.

 

[gpsguy]

RAIDz2 is a better choice in today's world of large disk capacities.

 

[cyberjock]

You mean RAIDZ1 and RAIDZ2? ZFS is currently v5... so maybe using proper terminology would be helpful...

 

[Scharbag]

Z2 over Z1 all day. Z2 can survive 2 simultaneous drive failures regardless of drive location. Z1, in your case, could survive 2 failures as long as they happen in opposite pools. If the 2 failures happen in the same pool, all your data is likely gone.