[CentOS] [Q} how can O.S. predicate a disk going to failure??

Disks are cheap, your data is not.  Replace the disk without hesitation.


2009/8/4 mcclnx mcc <mcclnx at yahoo.com.tw>:
>
> we have CENTOS 4.X on DELL server and one one of virtual disk include 4 disk configure as REID5 (one more disk for hot spare).  I saw /var/log/messages file have:
>
> Aug  4 06:27:02 host1 Server Administrator: Storage Service EventID: 2094  Predictive Failure reported:  Physical Disk 1:5 Controller 0, Connector 1
> Aug  4 06:27:02 host1 Server Administrator: Storage Service EventID: 2051  Physical disk degraded:  Physical Disk 1:5 Controller 0, Connector 1
>
> I use DELL OPMN to check and found "disk 1:5" still "online", but "predicate failure".
>
> I also use DELL OPMN to check virtual disk and it show "online", not "degrade".
>
> my questions are:
>
> 1. is this disk really "degrade" or not?
>
> 2. how O.S. can predicate disk going to failure?
>
> 3. do I need replace this disk now?
>
> Thanks.
>
>
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