24 4TB Disks VDEV space/perf/safe

[tbaror]

Hi All,

I have to configure new storage that will require around 80TB from 24x4TB disk
My question is vdev wise what is more recommended if i need to set layout as close as possible to 80TB
Configuration that will give me most safe/performance with given config , i am hesitating between
3x8 raid z1 or 2x12 raid z2 , what would be most recommended?
Please advise
Thanks

 

[depasseg]

an 8 Drive RAIDZ1 is not advised, nor is a 12 drive RAIDZ2. The likelihood of the second (or third) failure occuring in the time to resilver is just too great. Unless you have nearline backups, you should rethink your strategy.

 

[tbaror]

Thanks
What would you suggest as plan ?
Thanks

 

[depasseg]

More drives or bigger drives. Or replicated backups and the 2x12RAID-Z2 option.

 

[zambanini]

it also depends how many vdevs for IO performance are needed. without knowing your expected workload, we need a magic 8ball

 

[Fei]

I suggest create Raidz2 or Raidz3 .Because your pool degrade , it will rebuild very long time....