Eugen Leitl <[EMAIL PROTECTED]> wrote: > http://labs.google.com/papers/disk_failures.pdf
Interesting. However google apparently uses: serial and parallel ATA consumer-grade hard disk drives, ranging in speed from 5400 to 7200 rpm Not quite clear what they meant by "consumer-grade", but I'm assuming that it's the cheapest disk in that manufacturer's line. I don't typically buy those kinds of disks, as they have only a 1 year warranty but rather purchase those with 5 year warranties. Even for workstations. So I'm not too sure how useful their data is. I think everyone here would have agreed without the study that a disk reallocating blocks and throwing scan errors is on the way out. Quite surprising about the lack of a temperature correlation though. At the very least I would have expected increased temps to lead to faster loss of bearing lubricant. That tends to manifest as a disk that spun for 3 years not being able to restart after being off for a half an hour. Presumably you've all seen that. If they have great power and systems management at their data centers the systems may not have been down long enough for this to be observed. Regards, David Mathog [EMAIL PROTECTED] Manager, Sequence Analysis Facility, Biology Division, Caltech _______________________________________________ Beowulf mailing list, [email protected] To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
