RAID and DISK Problems

[J. Epperson]

On Thu, June 19, 2008 14:00, ammad shah wrote:
>
> Hi all,
>
> If i am using Software RAID of Linux (RHEL 5), how do i know that which
> disk is faulty or its RPM are down and need to be replace?

Install smartmontools, use smartctl/smartd.

>
> OR
>
> if I am using RAID Controller for same scenario
>

Use appropriate hardware-specific monitoring tool(s) for your controller. 
E.G.
lsiutil, mptstatus, megarc, storage components of OMSA, etc.