This verifies my guess: http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide#RAID-Z_Configuration_Requirements_and_Recommendations
On Thu, Mar 19, 2009 at 6:57 PM, Blake <blake.ir...@gmail.com> wrote: > IIRC, that's about right. If you look at the zfs best practices wiki > (genunix.org I think?), there should be some space calculations linked > in there somewhere. > > On Thu, Mar 19, 2009 at 6:50 PM, Harry Putnam <rea...@newsguy.com> wrote: >> I'm finally getting close to the setup I wanted, after quite a bit of >> experimentation and bugging these lists endlessly. >> >> So first, thanks for your tolerance and patience. >> >> My setup consists of 4 disks. One holds the OS (rpool) and 3 more all >> the same model and brand, all 500gb. >> >> I've created a zpool in raidz1 configuration with: >> >> zpool create zbk raidz1 c3d0 c4d0 c4d1 >> >> No errors showed up and zpool status shows no problems with those >> three: >> pool: zbk >> state: ONLINE >> scrub: none requested >> config: >> >> NAME STATE READ WRITE CKSUM >> zbk ONLINE 0 0 0 >> raidz1 ONLINE 0 0 0 >> c3d0 ONLINE 0 0 0 >> c4d0 ONLINE 0 0 0 >> c4d1 ONLINE 0 0 0 >> >> >> However, I appear to have lost an awfull lot of space... even above >> what I expercted. >> >> df -h >> [...] >> zbk 913G 26K 913G 1% /zbk >> >> It appears something like 1 entire disk is gobbled up by raidz1. >> >> The same disks configured in zpool with no raidz1 shows 1.4tb with df. >> >> I was under the impression raidz1 would take something like 20%.. but >> this is more like 33.33%. >> >> So, is this to be expected or is something wrong here? >> >> _______________________________________________ >> zfs-discuss mailing list >> zfs-discuss@opensolaris.org >> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss >> > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
