Hi, > I'm quite interested in ZFS, like everybody else I suppose, and am about > to install FBSD with ZFS.
welcome to ZFS! > Anyway, back to business :) > I have a whole bunch of different sized disks/speeds. E.g. 3 300GB disks > @ 40mb, a 320GB disk @ 60mb/s, 3 120gb disks @ 50mb/s and so on. > > Raid-Z and ZFS claims to be uber scalable and all that, but would it > 'just work' with a setup like that too? Yes. If you dump a set of variable-size disks into a mirror or RAID-Z configuration, you'll get the same result as if you had the smallest of their sizes. Then, the pool will grow when exchanging smaller disks with larger. I used to run a ZFS pool on 1x250GB, 1x200GB, 1x85 GB and 1x80 GB the following way: - Set up an 80 GB slice on all 4 disks and make a 4 disk RAID-Z vdev - Set up a 5 GB slice on the 250, 200 and 85 GB disks and make a 3 disk RAID-Z - Set up a 115GB slice on the 200 and the 250 GB disk and make a 2 disk mirror. - Concatenate all 3 vdevs into one pool. (You need zpool add -f for that). Not something to be done on a professional production system, but it worked for my home setup just fine. The remaining 50GB from the 250GB drive then went into a scratch pool. Kinda like playing Tetris with RAID-Z... Later, I decided using just paired disks as mirrors are really more flexible and easier to expand, since disk space is cheap. Hope this helps, Constantin -- Constantin Gonzalez Sun Microsystems GmbH, Germany Platform Technology Group, Global Systems Engineering http://www.sun.de/ Tel.: +49 89/4 60 08-25 91 http://blogs.sun.com/constantin/ Sitz d. Ges.: Sun Microsystems GmbH, Sonnenallee 1, 85551 Kirchheim-Heimstetten Amtsgericht Muenchen: HRB 161028 Geschaeftsfuehrer: Marcel Schneider, Wolfgang Engels, Dr. Roland Boemer Vorsitzender des Aufsichtsrates: Martin Haering _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
