Re: [CentOS] info about hdds in raid

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?

for devices that show up as /dev/hdX, try

# hdparm -i /dev/hda

for devices that show up as /dev/sdX,

# cat /proc/scsi/scsi

this last won't show serial numbers, however it will list drive models and SCSI channel/id/lun, which should narrow it down. the first SCSI device listed thats 'Direct-Access' (as opposed to Processor, or something else) is /dev/sda, the 2nd is /dev/sdb