Table of Contents
Advertisement
is, place the power supplies for grid A in slots 1 or 2 or both slots and place the power supplies for
grid B in slots 3 or 4 or both slots).
c) Place one hand on the front of the power supply and place your other hand under it to support its
weight.
d) Align the power supply to an open power supply slot.
Note : The alignment bracket on top of the power supply should align to a track at the top of the
slot and a bar at the bottom of the power supply should be guided by a track at the bottom of the
slot.
e) Slide the power supply all the way into the slot until it stops.
f) Slide the handle in the middle of the ejector lever toward the end of the lever and rotate the lever
to the front of the power supply. Release the middle handle.
Note :
• The lever should grab the inside of the slot and push the power supply onto its mid-plane
connectors.
• If you are using the combined power or power-supply redundancy mode, you can fill any power
supply slot with the power supplies. If you are using input-source or full redundancy modes, you
must place half of the power supplies in slots 1 and 2, and you must place the other half of the
power supplies in slots 3 and 4 (half will be used for available power and the other half will be
used for redundant power).
g) Screw in the two captive screws on the front of the power supply to the chassis. Tighten each
screw to 8 in-lb (0.9 N-m)
System Grounding
This section describes the need for system grounding and explains how to prevent damage from
electrostatic discharge.
Proper Grounding Practices
Grounding is one of the most important parts of equipment installation. Proper grounding practices
ensure that the buildings and the installed equipment within them have low-impedance connections and
low-voltage differentials between chassis. When you properly ground systems during installation, you
reduce or prevent shock hazards, equipment damage due to transients, and data corruption. Table 14 on
page 75 lists grounding best practices.
Table 14. Best practices
Environment
Commercial building is subjected
to direct lightning strikes.
For example, some places in the
United States, such as Florida,
are subject to more lightning
strikes than other areas.
Electromagnetic Noise Severity
Level
High
Chapter 3. Installing the IBM c-type SAN Device 75
Grounding Recommendations
All lightning protection devices
must be installed in strict
accordance with manufacturer
recommendations. Conductors
carrying lightning current should
be spaced away from power and
data lines in accordance with
applicable recommendations and
codes. Appropriate grounding
practices must be closely
followed.
Advertisement
Table of Contents
