12 Mar
2010
12 Mar
'10
1:32 a.m.
Yeah, it's complicated by the fact that a lot of RAID systems will consider any I/O error to mean the entire device is bad. ZFS does a particularly good job here, I've seen single raidz2 sets able to recover from having 4 simultaneously failing disks. I've had other vendor's arrays start failing disks while reconstructing from a single failure. Thankfully it was only 1 additional failure on a 2 parity set. Still PITA. On Thu, Mar 11, 2010 at 8:09 PM, Chuck Anderson <cra@wpi.edu> wrote:
Triple-Parity RAID and Beyond by Adam Leventhal | December 17, 2009
http://queue.acm.org/detail.cfm?id=1670144
As hard-drive capacities continue to outpace their throughput, the time has come for a new level of RAID.