Gmirror/graid or hardware raid?
quartz at sneakertech.com
Wed Jul 8 21:56:41 UTC 2015
> I thought about zfs but I won't have lots of RAM avaliable.
ZFS doesn't technically NEED gobs of ram just to function, that's a long
standing urban myth repeated by people who don't understand how the ARC
and/or dedupe works. You can run ZFS on basically any system, it's just
a question of how much it can cache. The less it can cache the more it
will have to hit the disks.... but that applies to basically every
As for raid level, you only have four disks so you don't have a lot of
options. You're pretty much looking at a raid-1, raid-10 or
raid-5/raidz-1. A 4-way raid-1 is I think overkill, and a bunch of VMs
will be heavy on the random read/write so a raid-5/raidz-1 will be worse
than a raid-10 performance wise. (Although with only a four disk array
the difference probably won't be earth shattering, so if you really need
the space a 5/z1 won't kill you).
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