Question about number of drives

hellokevin11 · Post by **hellokevin11** » 02 Nov 2015 02:45

My server can hold 17 drives.

Any foreseeable issues with 17 drives in RaidZ3?

Parkcomm · Post by **Parkcomm** » 03 Nov 2015 01:46

I assume you mean in one pool

Have a look at this http://blog.delphix.com/matt/2014/06/06 ... ipe-width/

hellokevin11 · Post by **hellokevin11** » 03 Nov 2015 05:17

I have been looking for something just like this!

Thanks for the great help. 10/10

Do you think it's better to do two nine disk Vdevs?

I'd be looking at 6% disk space for parity at 32kb with 17 drives
I'd be looking at 13% disk space for parity at 16 or 32kb with two nine disk vdevs, but I'd have six disk failure capacity vs three.

Post by **b0ssman** » 03 Nov 2015 08:08

also see
http://www.servethehome.com/raid-calcul ... tdl-model/

Parkcomm · Post by **Parkcomm** » 03 Nov 2015 21:20

2 x vdevs should scrub/resilver much faster and read iops around twice as fast - at the cost of 7% of your space, and you also get that higher survivability you mentioned. Seems like good idea to me.

XigmaNAS

Question about number of drives

Question about number of drives

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Re: Question about number of drives