Hitachi 2000 Series Hardware Reference Manual page 52

2. Start all storage subsystems, beginning with expansion enclosures.
Wait until the disk LEDs on all of the expansion enclosures have stopped blinking
(which indicates that they are spinning up) or two minutes, whichever comes first,
then start the storage subsystem RAID controller enclosures. Note that the disk
drives in some storage enclosures will not spin up until commanded to do so by
the RAID controller, so the LEDs may continue to blink until after the RAID
controller enclosure has sent those commands and the drives have spun up.
3. Start the System Management Unit (SMU) by depressing the red button located on
the right of the unit.
4. Switch the power to "on" for first High-performance NAS Platform(s).
To switch the power on to a server, press the power switch on PSU1 to the "on"
position, wait 5-10 seconds, press the power switch on PSU2 to the "on" position.
See "Power Supply Unit (PSU600/PSU610)," on page 21
the PSUs in a High-performance NAS Platform.
5. If you are starting a cluster, wait 5-10 seconds before switching the power to "on"
for the next node in the cluster.
40 Hitachi High-performance NAS Platform
for more information on