Andrew Lentvorski wrote: > Gus Wirth wrote: >> To add some more information to an excellent summary, in the realm of >> Non-Recoverable Error Rates (NRER, a measure of how often the drive >> gets it wrong while reading data), enterprise class SCSI drives are at >> least an order of magnitude better than most anything else out there. >> Back to my previous examples, the Seagate ST3146854LC SCSI drive has a >> NRER of 1 in 10^15, while the Western Digital WD1600YS (Enterprise >> level server drive ) has a NRER of 1 in 10^14. The WD Raptor line >> claims 1 in 10^15. > > I've seen those numbers a couple of times, but what do they *mean*? > > 10^15 bits is approximately 10^14 bytes. That's 100GB.
Ummm, calculate twice, act once? > > A simple dd from a 100GB drive to another should throw a non-recoverable > error. > > Is that actually true? If so, I need to bring ZFS online on every drive > I own immediately. Somewhere you got your 2's and 10's intermixed? ;-) ..j -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
