HP MSA 2040 SAN Storage - Manual (Page 28)

28 Installing the enclosures
Figure 16 AC power supply
To power on the system:
1. Obtain a suitable AC power cord for each AC power supply 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 16 ).
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 power supply within each drive enclosure.
3. Plug the power cord into the power cord connector on the back of the controller enclosure (see
Figure 16 ). Plug the other end of the power cord into the rack power source.
Repeat the sequence for the controller enclosure’s other switchless power supply.
To power off the system:
1. Stop all I/O from hosts to the system [see "Stopping I/O" (page 53) ].
2. Shut down both controllers using either method described below:
• Use the SMU (Storage Management Utility) to shut down both controllers, as described in the online
help and web-posted HP MSA 2040 SMU Reference Guide.
Proceed to
step 3 .
• Use the command-line interface (CLI) to shut down both controllers, as described in the HP MSA
2040 CLI Reference Guide.
3. Disconnect the power cord male plug from the power source.
4. Disconnect the power cord female plug from the power cord connector on the power supply.
NOTE: Power cycling for enclosures equipped with a power switch is described below.
DC and AC power supplies equipped with a power switch
DC power supplies and legacy AC power supplies are shown below. Each model has a power switch.
Figure 17 DC and AC power supplies with power switch
Power cord connect
Power
switch
Power
cable
connect
Power
switch
Power
cord
connect
DC power supply unit Legacy AC power supply unit