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4.3.3 Hot-Swap Drive Replacement
The subsystem supports hot-swapping of drives while the system is powered on. A disk may
be disconnected, removed or replaced with a different disk without turning off the system.
4.3.4 Disk Failure Detection
The subsystem can automatically detect disk failures. It monitors disk activities including the
elapsed time on all commands issued to the disks as well as parity errors and other potential
problems. A time-out will reset the disk and retry the command. If the command time-out
occurs again, the disk will fail. Any disk with too many errors will be shut down by subsystem.