Chapter 4. Installing The System Hardware; Nebs-Compliant Earth Connection; Installing Support Rails For The System - IBM FlashSystem 5000 Series Quick Installation Manual

Chapter 4. Installing the system hardware

After verification that you have all of the hardware components that you require, you can install them.
You completed the initial steps of verifying the shipping contents and becoming familiar with the
hardware components. You verified that the power and environmental requirements are met and planned
the location of the enclosures. You are now ready to begin installing the hardware components and
connecting the data cables and power cords.

NEBS-compliant earth connection

When you install enclosures into a Network Equipment-Building System (NEBS) compliant installation,
each enclosure must have a reliable electrical earth connection that is separate to any earth connections
provided by power supply cables.
On system enclosures, this connection is made by using the front enclosure mounting screws that are
part of the standard installation described in "Installing support rails for the system" on page 21 and
"Installing enclosures" on page 25. To provide a reliable electrical earth connection, the upright
mounting rails of the racks into which enclosures are installed must meet the following requirements
before installing the support rails and enclosures:
• Upright mounting rails must not be painted, oxidized or otherwise insulated from the enclosure flanges
and mounting rails. If paint, oxidization or other insulation is present, it must be removed and the metal
must be brought to a bright, non-corroding finish.
• Upright mounting rails must have their own NEBS-compliant connection to earth, independent of the
earth connections provided by any power supply cables.
Notes:
1. If the system is required to be NEBS-compliant, some system configuration settings must be made.
For details, see "Configuring a system to be NEBS-compliant" on page 73.

Installing support rails for the system

Before you install a control enclosure or a 2U expansion enclosure, you must first install the support rails.
The same rails for are used for the control enclosures and the 2U expansion enclosures.
About this task
Note: For NEBS compliant installations, more requirements are placed on the rack into which the support
rails and enclosures are to be installed. Before you proceed, ensure that the rack meets the requirements
that are listed in "NEBS-compliant earth connection" on page 21.
Procedure
To install the support rails for an enclosure, complete the following steps.
1. Locate the enclosure rails (Figure 5 on page 22).
The rail assembly consists of two rails that must be installed in the rack cabinet.
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