IBM DS3950, Руководство пользователя и инструкция по установке

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Set the E-DDMs on a dry, level surface away from magnetic fields. Save the
packing material and documentation in case you need to return them.
5.
Perform the following steps:
a. Stop all I/O activity to the storage subsystem and attached storage
expansion enclosures. Make sure of the following:
1) All of the green Drive activity LEDs on the front of the storage
subsystem (and on all attached EXP395s) are not flashing.
2) The green Cache active LEDs are off. Refer to the IBM System Storage
DS3950 Storage Subsystem Installation, User's, and Maintenance Guide for
the location of the Cache active LEDs.
b. If applicable, use the operating system software to disconnect the storage
subsystem logical drives from the host before you power off the storage
subsystem.
Attention: To turn off all power to the storage subsystem, you must turn off
both power-supply switches and disconnect both power cords. Use the
procedure in step 6 for the proper shutdown sequence.
6. Turn off the power to each device based on the following shutdown sequence:
a. Turn off power to the host before you turn off power to the storage
subsystem. If the host must stay powered on to support an existing
network, see the operating system documentation for information about
disconnecting the storage subsystem logical drives from the host before the
storage subsystem is powered off.
b. Turn off power to the storage subsystem before you turn off power to the
EXP395. Turn off both power supply switches on the back of the storage
subsystem.
Statement 5:
CAUTION:
The power control button on the device and the power switch on the
power supply do not turn off the electrical current supplied to the
device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords
are disconnected from the power source.
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c. Turn off power to other supporting devices (for example, management
stations, fibre-channel switches, or Ethernet switches).
7. Use the procedures in “Replacing hot-swap hard disk drives” on page 72 to
remove the E-DDMs that you want to replace. Use the procedures in
“Installing hot-swap hard disk drives” on page 70 to install the new E-DDMs
into the EXP395.
8.
After you install all the new E-DDMs, check the system documentation for the
hardware devices that you intend to power on, and then determine the proper
startup sequence. Use the following power-on sequence, where applicable:
Chapter 5. Installing and replacing components
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