A hot spare device can be shared between two software raid devices, such as /dev/mdX and /dev/mdY. These raid devices can be configured with Raid levels like 1,5 and 6.
Assume the hot spare device has /dev/sdx1
Initially, it is required to add the spare device /dev/sdx1 to any one of the raid devices.
mdadm /dev/md0 -a /dev/sdx1
After adding the dis...
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