The
enclosure may be either independent of the host or incorporated.
A drive array may be integrated into a rack-mounted server chassis
designed for this purpose for example.
The
power supply sub-system may offer stand-by redundant PSUs and
cooling units in the event of failure. The enclosure may additionally
support the hot-swap exchange of power components without bringing
the system off-line, or the system must first be powered down
to replace power and cooling units.
Whether
SAFTE is implemented in the enclosure
for detailed analysis and monitoring of the array components by
the controller.
Whether
the enclosure supports hot-swap exchange of hard drives allowing
drives to be replaced without bringing the RAID system off-line
and with no disruption to user access. This is important for arrays
utilising spare drives across the
system.
The
enclosure may support warm-swap of hard drives where the power
and connections remain fully active but normal I/O access must
be temporarily halted during the physical drive swap-over.
