Brett wrote: > Hi All, > > I've been reading through the documentation for ZFS and have noted in several > blogs that ZFS should support more advanced layouts like RAID1+0, RAID5+0, > etc. I am having a little trouble getting these more advanced configurations > to play nicely. > > I have two disk shelves, each with 9x 300GB SCSI drives attached to a Dell > PowerEdge 1850 with dual XEON CPUs and 4GB RAM running the 64-bit Solaris OS. > > Ideally, I would like to have a RAIDz-2 on each disk shelf and have a mirror > between the two disk shelves so that my pool would remain available even if I > lost the entire shelf. > > So far, I've been able to configure a single pool with two RAID-z volumes > (one per shelf) in a stripe, though this doesn't help me if I lose one of the > arrays. I've also been able to configure 4x 4-disk mirrors. > > e.g. > > zpool create zfsdata mirror c0t0d0 c0t1d0 c0t2d0 c0t3d0 mirror c0t4d0 c0t5d0 > c0t8d0 c0t9d0 mirror c1t0d0 c1t1d0 c1t2d0 c1t3d0 mirror c1t4d0 c1t5d0 c1t8d0 > c1t9d0 > > That gives me two mirrors per disk shelf (4 in total) but only 1.1TB of > usable disk capacity. > > Is there any way to get the configuration I want, i.e. two raid-z2 volumes in > a mirrored configuration? > > If anyone out there has some suggestions for a better configuration, please > let me know :-). I'd like to be able to lose two disks per shelf before > losing the shelf (if possible) but still be able to recover from a total > array failure. > > How about 8 two way mirrors between shelves and a couple of hot spares?
Ian _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
