I am configuring my first thumper. Our goal is to reduce the odds that a single failure will take down the file system. DOes such a design exist. I cannot find it.
Questions: 1)Do boot disks (currently controller 5 , disk 0 and 4) have to be on one controller or can they be split (eg contoller 0 disk 0 and controller 5 disk 0)? 2) IF for whatever reason I lose both mirrors of a root disk, where does ZFS information reside? Can I get new disks, rebuild the OS and mount the ZFS filesystems , or is that ZFS configuration stored on these root disks? Thanks. Details are below. Our first design was: 5 pools of 9 disks , all raidz + 1 hot spare for all pools 1 filesystem with all 5 pools , and raidz as the underlying protection However , a single controller failure will kill the filesystem with this configuration . Next design: 9 pools of 5 disk raidzs. All pools are protected against a single controller failure but the two UFS root disks (mirror using md raid mirroring) are both on controller 5, and if that controller dies, the filesystems goes down. This is my next probelm with a design avoiding single controller failure. Are there performance issues with this design? ! /bin/bash # create initial pool from disk 0 zpool create adp raidz c0t0d0 c1t0d0 c2t0d0 c3t0d0 c4t0d0 # now grow zfs pool adp , each 5 disks ensuring that no single controller failure will lose the filesystem # option of 5 9disk pools is risky as a single controller failure could result in 2 or more disks in 1 raidset failing # sacrifice capacity for risk management zpool add adp raidz c0t1d0 c1t1d0 c2t1d0 c3t1d0 c4t1d0 zpool add adp raidz c0t2d0 c1t2d0 c2t2d0 c3t2d0 c5t1d0 zpool add adp raidz c0t3d0 c1t3d0 c2t3d0 c4t2d0 c5t2d0 zpool add adp raidz c0t4d0 c1t4d0 c3t3d0 c4t3d0 c5t3d0 zpool add adp raidz c0t5d0 c1t5d0 c2t4d0 c3t4d0 c4t4d0 zpool add adp raidz c0t6d0 c2t5d0 c3t5d0 c4t5d0 c5t5d0 zpool add adp raidz c0t7d0 c2t6d0 c3t6d0 c4t6d0 c5t6d0 zpool add adp raidz c1t7d0 c2t7d0 c3t7d0 c4t7d0 c5t7d0 # now create the one global hot spare zpool add -f adp spare c1t1d0 zpool add -f systems spare c1t1d0 This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
