On Sun, 8 Nov 2009, Wael Nasreddine (a.k.a eMxyzptlk) wrote:
I'm sure this question has been asked many times already, but I couldn't find the answer myself. Anyway I have a laptop with 2 identical hard disks 250Gb each, I'm currently using Linux on RAID0 which gave me ~500Gb.. I'm planning to switch to FreeBSD but I want to know before I do, what can I get with these hard disks? do I get ~500Gb or less? can ZFS be setup to use RAIDz with only 2 hard disks ?
Since FreeBSD was mentioned, if FreeBSD supports zfs boot, then you can use mirrors and get 250GB. Otherwise (if no other boot device is available) you will need to use disk partitioning and boot from a UFS (FFS) filesystem. In this case you can still use a zfs mirror, but only across partitions. Your boot would not be protected but if you partition the disks identically, perhaps you can duplicate your boot/root environment, or perhaps FreeBSD offers a different mechanism to mirror the root partition which is also bootable.
If maximizing disk space is important to you, you don't have to use zfs mirroring, but most people here would recommend it.
Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
