[CentOS] info about hdds in raid

[Les Mikesell]

Eugeneapolinary Ju wrote:
> How can I tell wich HDD to swap, when the "cat /proc/mdstat" says one 
> HDD of the RAID1 array has died?
> 
> Does the HDD's has some serial numbers, that I can see in "reality", and 
> I can get that number from e.g.: a commands output?
> 
> How could I know wich HDD to swap in e.g.: a RAID1 array?
> 

If you can see activity lights, you can 'cat /dev/sd? >/dev/null' to 
make them busy, one at a time (where ? is a, b, c, etc).

-- 
   Les Mikesell
     lesmikesell at gmail.com