- IBM switch Users and Maintenance Guide

Turning on the storage server
Important: DS4100 base storage server only: You must turn on the storage
expansion units and verify that the storage expansion unit fibre channel
connections are optimal by checking the indicator lights before you turn
on the DS4100. The controllers might not recognize the correct
configuration if the hard disk drives are powered up after the DS4100.
For instructions on how to power up the storage expansion units, refer
to the storage expansion unit documentation.
Note:
Always wait at least 30 seconds between the time you turn off a power
switch and the time you turn on the power again.
Perform the following steps to turn on the power for the initial startup of the storage
server:
1. Verify that:
a. All communication and power cables are plugged into the back of the
storage server and a properly grounded ac electrical outlet.
b. All hard disk drives are locked securely in place. For more information, see
“Installing hot-swap hard disk drives” on page 80.
Note: At least one drive must be present before you start the DS4100.
Attention: If you are restarting the system after a normal shutdown, wait at
least 10 seconds before you turn on the power by using the power-on sequence
in step 2.
2. Check the system documentation for the hardware devices that you intend to
power up, and then determine the proper startup sequence. Use the following
power-on sequence, where applicable:
a. Turn on the power to the supporting devices (for example, Ethernet switches
and management stations) before the storage server.
Attention: If you will be directly managing the storage array, you must set
up the Dynamic Host Configuration Protocol (DHCP) or BOOT-P server
before you turn on the power. Setting up the server allows the controllers to
obtain the corresponding IP address when you turn on the power to the
array module. For more information, see the software installation guide for
your operating system.
b. You must turn on the expansion units before the storage server. The
controllers might not recognize the correct configuration if the drives are
powered up after the storage server. For instructions on how to power up
the expansion units, see the expansion-unit documentation.
c. Turn on the power to the storage server; then restart or turn on the power to
the host.
Note: Depending on your operating system, you might not have to restart
the host. For more information, see the software installation guide for
your operating system.
3.
Turn on the power to each device, based on the power-on sequence in step 2.
To turn on power to the storage server, turn on the power-supply switches on
the back of the storage server. You must turn on both power-supply switches to
take advantage of the redundant power supplies.
4. Use the DS4000 Storage Manager client and the Fault LEDs to check the
overall status of the storage server and its components. All LEDs should be
66 IBM TotalStorage DS4100 Storage Server: Installation, User’s, and Maintenance Guide