Hi, everybody!
I just read an article explaning, why RAID-5 (or with ZFS RAIDZ1) is (presumably) dead. What do you think of it?
The core of it was that on a commercial-grade drive (including WD Red and the like), you have one non-correctable read-error every 1^14 bits (about every 12TB of read data). So, if you (like me) have a ZFS RAIDZ1 with 4 * 2TB drives and one fails, there is a 50:50 chance of a non-correctable read-error while rebuilding the array (resilvering). What would happen in that case? Will the resilver fail and all data is lost? Or does ZFS have some checksum-magic for this case?
Thank you!
I just read an article explaning, why RAID-5 (or with ZFS RAIDZ1) is (presumably) dead. What do you think of it?
The core of it was that on a commercial-grade drive (including WD Red and the like), you have one non-correctable read-error every 1^14 bits (about every 12TB of read data). So, if you (like me) have a ZFS RAIDZ1 with 4 * 2TB drives and one fails, there is a 50:50 chance of a non-correctable read-error while rebuilding the array (resilvering). What would happen in that case? Will the resilver fail and all data is lost? Or does ZFS have some checksum-magic for this case?
Thank you!