IBM DS3950, Installation, User'S, And Maintenance Manual, Page: 60 / 252

Floor space: The floor area at the installation site must provide the following
conditions:
v
Sufficient space to install the storage subsystem
v
Enough stability to support the weight of the fully configured storage subsystem
and associated systems. See “Weight” on page 20 for weight specifications.
Make sure that all requirements, such as floor space, air conditioning, and electrical
service, have been met. Other site preparation activities include the following tasks:
v
To make sure that there is enough room to move around the cabinet and install
modules, clear space at the installation area.
v
Install uninterruptible power supply (UPS) devices.
v
If applicable, install host servers with Fibre Channel host bus adapters (HBAs),
Fibre Channel switches, or other devices.
v
Route interface cables from the Fibre Channel HBA ports in the hosts or Fibre
Channel switches to the installation area.
v
Route main power cords to the installation area.
Continue with “Preparing the rack cabinet.”
Preparing the rack cabinet
Important: Before you install the storage subsystem in a rack cabinet, keep in mind
the following considerations:
v
Review the documentation that comes with your rack enclosure for safety and
cabling considerations.
v
Install the storage subsystem in an environment with a temperature of 22° C (72°
F). See “Environmental requirements and specifications” on page 21 for details.
v
For proper airflow, do not block the air vents; allow for at least 15 cm (6 in.) of
air space.
v
For optimal rack stability, load the rack starting at the bottom.
v If you install multiple components in the rack, do not overload the power
outlets.
v
Always connect the storage subsystem to a properly grounded outlet.
v
Always connect the IBM-certified rack power distribution units (PDUs) to at
least two independent power circuits or sources.
Complete the following steps to prepare the rack cabinet before you install the
storage subsystem:
1. Move, unpack, and level the rack at the installation site (if needed).
2. Remove the external rack panels.
3. If necessary, stop all I/O activity to the devices in the rack.
4. If necessary, turn off all drive enclosure and rack power. Disconnect existing
power, network, and other external cables.
5. Install any additional interface cables and power cables.
After you have completed these steps, continue with “Installing the support rails”
on page 33.
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IBM System Storage DS3950 Storage Subsystem: Installation, User’s, and Maintenance Guide