Well the thing I like about raidz3 is that even with 1 drive out you have 3 copies of all the blocks. So if you encounter bit rot, not only can checksums be used to find the good data, you can still get a best 2 out of 3 vote on which data is correct.
As to performance, all I can say is test test test. Pick your top 3 contenders, install bonnie++ and then test each configuration. Then make your decision based on your personal balance between performance, space and reliability. Due to space considerations I had to choose raidz2 over raidz3. I just couldn't give up that last drives worth of space. oddly enough in my enviroment I got better performance out of raidz2 than I did out of 7 mirrors striped together. It may be because they are all 250gb ssds. I think the bottleneck in my case is either the Adaptec raid card or cpu. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
