Advertisement
Controlling System Power
This section includes generic step-by-step instructions for using the power cords
to control system power, using the server module's power and CPU reset
buttons to control server power, and for performing a graceful or immediate
shutdown from the command line or BMC WebUI. Individual system
configurations may differ based on customer needs and customization. Contact
an IT manager for additional information on controlling power for the system
configuration in use.
USING THE POWER CORDS
The storage server does not contain a power button. Power is controlled by the
two power cords that plug into the two PM jacks on the rear of the enclosure and
into an active power distribution unit (PDU). The system initiates a power up
when the first PM is plugged into an active power source. While connected to
active PDUs, drives will remain at an idle speed, even if both servers are
powered down. PMs are hot-swappable and do not require the system power to
be shut down during replacement. The PM jacks are located at the rear of the
enclosure, as pictured in Figure 5.3 on page 54.
Figure 5.3 PM jack locations
| 54 |
NOTE: The VSS2249RQ Storage Server sequences the power supplied to the disk
drives on start-up to prevent an overcurrent condition. Different disk drive
manufacturers, types, and capacities used will result in varying weights and differences
in the amount of time that the drives take to become ready. In most cases, waiting
approximately one to two minutes from power-on will ensure that all drives are
available.
NOTE: The VSS2249RQ Storage Server does not support single PM configurations
due to thermal and redundancy considerations.
WARNING: While some factory-approved maintenance on FRUs (e.g. hot-swapping a
PM, server module, fan, or drive) does not require the user to disconnect power to the
system, performing other types of maintenance on systems connected to an electrical
power supply may result in serious injury or death. Only individuals with knowledge and
training in working with devices containing live circuits should operate the system. Take
precautions when performing all other types of maintenance. Disconnect 2 power
supply cords before servicing.
Chapter 5: Powering the VSS2249RQ Storage Server
CTC-DOC-002293, Rev A.2
Advertisement
Chapters
