Dc And Ac Power Supplies Equipped With A Power Switch; Ac Power Supply; Dc And Ac Power Supplies With Power Switch - HP MSA 2040 User Manual

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
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
2. Shut down both controllers using either method described below:
• Use the SMU to shut down both controllers, as described in the online help and web-posted HP
MSA 2040 SMU Reference Guide.
Proceed to
• Use the 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.
DC power supply unit
Figure 17 DC and AC power supplies with power switch
step 3.
"Stopping I/O" (page 55)].
Power
switch
Power
cable
connect
Legacy AC power supply unit
Power cord connect
Figure
Power
switch
Power
cord
connect
Powering on/powering off
16).
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