Re: [zfs-discuss] ZFS RAID-Z2 degraded vs RAID-Z1

2010-04-25 Thread Edward Ned Harvey
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Peter Tripp > here, I'll swap it in for the sparse file and let it resilver. > > Can someone with a stronger understanding of ZFS tell me why a degraded > RaidZ2 (minus one disk) is less effici

Re: [zfs-discuss] ZFS RAID-Z2 degraded vs RAID-Z1

2010-04-24 Thread Freddie Cash
On Sat, Apr 24, 2010 at 9:21 AM, Peter Tripp wrote: > Can someone with a stronger understanding of ZFS tell me why a degraded > RaidZ2 (minus one disk) is less efficient than RaidZ1? (Besides the fact > that your pools are always reported as degraded.) I guess the same would > apply with RaidZ2

Re: [zfs-discuss] ZFS RAID-Z2 degraded vs RAID-Z1

2010-04-24 Thread Roy Sigurd Karlsbakk
- "Peter Tripp" skrev: > Can someone with a stronger understanding of ZFS tell me why a > degraded RaidZ2 (minus one disk) is less efficient than RaidZ1? > (Besides the fact that your pools are always reported as degraded.) I > guess the same would apply with RaidZ2 vs RaidZ3 - 1disk. A deg

[zfs-discuss] ZFS RAID-Z2 degraded vs RAID-Z1

2010-04-24 Thread Peter Tripp
Had an idea, could someone please tell me why it's wrong? (I feel like it has to be). A RaidZ-2 pool with one missing disk offers the same failure resilience as a healthy RaidZ1 pool (no data loss when one disk fails). I had initially wanted to do single parity raidz pool (5disk), but after a