34 Installing the enclosures
Figure 11 Switchless AC PSU
to power on the system:
1. Obtain a suitable AC power cord for each AC PSU that will connect to a power source.
2. Plug the power cord into the power cord connector on the back of the drive enclosure (see Figure 11).
Plug the other end of the power cord into the rack power source. Wait several seconds to allow the
disks to spin up.
Repeat this sequence for each switchless PSU within each drive enclosure.
3. Plug the power cord into the power cord connector on the back of the controller enclosure (see
Figure 11). Plug the other end of the power cord into the rack power source.
Repeat the sequence for the controller enclosure’s other switchless PSU.
To power off the system:
1. Stop all I/O from hosts to the system.
2. Shut down both controllers using either method described below:
• Use SMU to shut down both controllers, as described in the online help and web-posted HP
StorageWorks P2000 G3 MSA System SMU Reference Guide.
Proceed to step 3
• Use the command line interface (CLI) to shut down both controllers, as described in the HP
StorageWorks P2000 G3 MSA System CLI Reference Guide.
3. Disconnect the power cord’s male plug from the power source.
4. Disconnect the power cord’s female plug from the power cord connector on the PSU.
DC and AC PSUs with power switch
DC and legacy AC power supplies — each equipped with a power switch — are shown below.
Figure 12 DC PSU and AC PSU with power switch
Power
switch
Power
cable
connect
Power
switch
Power
cord
connect
DC power supply unit Legacy AC power supply unit
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