> > I'm using raidz2 across 8 drives, but if I had it to do again, I'd > probably just use mirroring. Unfortunately, raidz2 kills your random > read and write performance, and that makes Time Machine really, really > slow. I'm running low on space now, and considering throwing another > 8 drives into the case in the spring, if I can find a cheap 8-port > PCI-E SATA CARD. When that happens, I'll probably try to convert > everything to mirroring. >
Not sure how you have those 8 drives configured, but if you haven't already then you should take a look at: http://www.solarisinternals.com/wiki/index.php/ ZFS_Best_Practices_Guide#RAID- Z_Configuration_Requirements_and_Recommendations If you could do it over again, then you would get better performance by having more top level vdevs. So instead of a single 6+2 raidz2 top level vdev, you could have (assuming two more disks), 2 3+2 raidz2 vdevs. Depends on what is important to you. eric _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
