On Sun, Nov 15, 2009 at 9:25 AM, Les Pritchard <les.pritch...@gmail.com>wrote:
> Hi, just wondering if I can get any ideas on my situation. I've used ZFS a > lot with equal sized disks and am extremely happy / amazed with what it can > offer. However I've encountered a few people who want to use ZFS but have a > bunch of different disks but still want the max size of usable space > possible. > > Take an example: > 3 x1TB and 2 x500GB disks. Is there any way the 2x500GB disks could be put > into a stiped pool that could then be part of a 4 x1TB RAIDZ pool? > Nope, not unless you used a hardware raid card. Doing that would be a *bad idea* anyways. You'd basically be throwing away the entire reason for doing raid-z as there would be no redundancy in the 500GB drive raidset. > > If they were all put in a RAIDZ pool as is, it would treat all the disks as > 500GB and lose the rest of the space - is that correct? > Correct. > > I know that in this case they could go out and get a very cheap 1TB HDD to > resolve this, but it's more the idea because I'm seeing lots of people with > different disks who want to squeeze the most space possible out of them. > So have two raidsets. One with the 1TB drives, and one with the 300's. --Tim
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