How many disk in one pool

Albert Shih Albert.Shih at
Fri Oct 5 20:59:25 UTC 2012

Hi all,

I'm actually running ZFS under FreeBSD. I've a question about how many
disks I «can» have in one pool. 

At this moment I'm running with one server (FreeBSD 9.0) with 4 MD1200
(Dell) meaning 48 disks. I've configure with 4 raidz2 in the pool (one on
each MD1200)

On what I understand I can add more more MD1200. But if I loose one MD1200
for any reason I lost the entire pool. 

In your experience what's the «limit» ? 100 disk ? 

How FreeBSD manage 100 disk ? /dev/da100 ? 



Albert SHIH
DIO bâtiment 15
Observatoire de Paris
5 Place Jules Janssen
92195 Meudon Cedex
Téléphone : 01 45 07 76 26/06 86 69 95 71
xmpp: jas at
Heure local/Local time:
ven 5 oct 2012 22:52:22 CEST

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