Re: Do I need SAS drives?..
Ben RUBSON <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.scsi,gmane.os.freebsd.devel.hardware |
|---|---|
| Message-ID | <[email protected]> |
> On 09 Aug 2017, at 17:59, Alan Somers <[email protected]> wrote: > > 3) SAS drives have a lot of fancy features that you may not need or > care about. For example, (...) their error > reporting capabilities are more sophisticated than SMART Really interesting answer Alan, thank you very much ! Slightly off-topic but I take this opportunity, how do you check SAS drives health ? I personally cron a background long test every 2 weeks (using smartmontools). I did not experience SAS drive error yet, so not sure how this behaves. Does the drive reports to FreeBSD when its read or write error rate cross a threshold (so that we can replace it before it fails) ? Or perhaps smartd will do ? As an example below a SAS error counter log returned by smartctl : Errors Corrected by Total Correction Gigabytes Total ECC rereads/ errors algorithm processed uncorrected fast | delayed rewrites corrected invocations [10^9 bytes] errors read: 0 49 0 49 233662 73743.588 0 write: 0 3 0 3 83996 9118.895 0 verify: 0 0 0 0 28712 0.000 0 Thank you ! Ben _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-scsi To unsubscribe, send any mail to "[email protected]"