[CentOS] info about hdds in raid

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?



thank you




      
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