Re: [zfs-discuss] ZFS RAID-10

2006-10-23 Thread Richard Elling - PAE
Dennis Clarke wrote: Dennis Clarke wrote: While ZFS may do a similar thing *I don't know* if there is a published document yet that shows conclusively that ZFS will survive multiple disk failures. ?? why not? Perhaps this is just too simple and therefore doesn't get explained well. That is

Re: [zfs-discuss] ZFS RAID-10

2006-10-23 Thread Sanjay Nadkarni
SVM did RAID 0+1 i.e. mirrored entire sub-mirrors. However SVM mirroring did not incur the problem that Richard alludes to, i.e. a single disk failure on a sub-mirror did not take down the entire sub-mirror, because the reads and writes are smart and acted as though it was a RAID 1+0. Th

Re: [zfs-discuss] ZFS RAID-10

2006-10-22 Thread Dennis Clarke
> Dennis Clarke wrote: >> While ZFS may do a similar thing *I don't know* if there is a published >> document yet that shows conclusively that ZFS will survive multiple disk >> failures. > > ?? why not? Perhaps this is just too simple and therefore doesn't get > explained well. That is not what

Re: [zfs-discuss] ZFS RAID-10

2006-10-22 Thread Richard Elling - PAE
Dennis Clarke wrote: While ZFS may do a similar thing *I don't know* if there is a published document yet that shows conclusively that ZFS will survive multiple disk failures. ?? why not? Perhaps this is just too simple and therefore doesn't get explained well. Note that SVM (nee Solstice Di

Re: [zfs-discuss] ZFS RAID-10

2006-10-22 Thread Dennis Clarke
> On Sun, 22 Oct 2006, Stephen Le wrote: > >> Is it possible to construct a RAID-10 array with ZFS? I've read through >> the ZFS documentation, and it appears that the only way to create a >> RAID-10 array would be to create two mirrored (RAID-1) emulated volumes >> in ZFS and combine those to cre

Re: [zfs-discuss] ZFS RAID-10

2006-10-22 Thread Dale Ghent
On Oct 22, 2006, at 9:57 PM, Al Hopper wrote: On Sun, 22 Oct 2006, Stephen Le wrote: Is it possible to construct a RAID-10 array with ZFS? I've read through the ZFS documentation, and it appears that the only way to create a RAID-10 array would be to create two mirrored (RAID-1) emulated v

Re: [zfs-discuss] ZFS RAID-10

2006-10-22 Thread Al Hopper
On Sun, 22 Oct 2006, Stephen Le wrote: > Is it possible to construct a RAID-10 array with ZFS? I've read through > the ZFS documentation, and it appears that the only way to create a > RAID-10 array would be to create two mirrored (RAID-1) emulated volumes > in ZFS and combine those to create the