Drive failure in RAID
I have a WinXP box:
- Intel Core 2 Duo 2 GHz
- Gigabyte GP-P35-DS3P Motherboard w/ integrated drive contoller
- Antec 380W PS
- 1 GB RAM
- 3 x Samsung HD501LJ 7200 RPM SATA 3.0 Gb/s drives in a RAID 5
System working fine for a couple of years without problem as a house file/media server. Running 24/7, tucked away in an out of the way location.
Recently, systems slowed way down. HD is constantly grinding away. Clicking sound. I'm guessing a hard drive crash is imenent.
My problem: how do I test which drive is the problem or confirm that it is in fact a hard drive issue? What test can people recommend that will test individual hard drives in a RAID (which my OS interperts as a single drive)?
Coincidentally, I have another computer too that also recently slowed way down and the HDD constantly grinds away. No clicking sound and the computer functions, but stalls from time-to-time with a HDD light that is solid. Yes, I've run a full virus sweep. But same basic question - what are good HD test utilities?