On 9/30/2010 6:40 AM, Gary Buhrmaster wrote:
Getting back the data your wrote is a hard problem. ZFS presumes that everything downstream of it will (eventually) fail. There is overhead there, but it does solve a set of problems that other solutions do not. (And the highly paranoid presume ZFS will fail, so take different precautions).
I've seen 3 RAID-5 sets have double-disk failures in the last 5 years. I've seen one even have a triple-disk failure in a short timespan. Too short for all that rebuild from hot spares business to work. Granted, older disks on older system. Everyone will say "yeah, but it's very unlikely and hasn't happened to ME". I like ZFS RAID-10, I like it a LOT. I don't think people understand how good it really is, most are afraid of anything other than the OS they run now and antique filesystems that have accreted decades of "fixes" for design defects. Do you trust black box RAID controllers? I don't. I really like being able to run scrub whenever I need to ensure the data on the disk is correct. It makes me sad that Oracle bought Sun, where it will probably wither. If IBM had bought Sun I would have more hope of a good filesystem for MacOS, Linux, etc. in the near term. ZFS has been stable and in production for years now. I like btrfs but it is years from being ready for terabytes of production data. _______________________________________________ OpenAFS-info mailing list [email protected] https://lists.openafs.org/mailman/listinfo/openafs-info
