Step 5. Setting Up Rails In The Rack - IBM eServer p Series Installation Manual

Step 5. Setting Up Rails in the Rack

If your system arrived installed in a rack with all the cables attached, skip to "Step 9.
Setting Up Attached Devices" on page 17. If not, continue with this step.
Note: Read the following drawer placement notes, and Caution statements before
Note: Service clearance may be required on the early Model H80 I/O and CEC
Notes:
1. The 7014 Model T00 and T42 racks have EIA numbers visible from the front and
rear that start with 1 (at the bottom) to 36, or 42 (at the top). Therefore, the rail
surface that a drawer sits on is approximately in line with the lower edge of the EIA
position for that drawer. The lowest EIA number completely occupied by a drawer is
said to be that drawer's EIA position. An EIA number is also used in identifying
cables attached to that drawer. The model H80, 660 models 6H0 and 6H1 I/O and
CEC drawers occupy 5 EIA units each.
2. Because of service restriction for the CEC drawer (see note 6), the I/O drawer
should be installed above the CEC drawer as shown in the figure under note 8 on
page 7.
3. The system has two service positions. One position is with the drawer pulled out the
front of the rack, and the other position is with the drawer pulled out the rear of the
rack.
4. Two stabilizers are required on the rack before installing the system if the rack is
not bolted to the floor. One must be installed at the bottom front of the rack unit,
and the other at the bottom rear of the rack unit. Both must be installed prior to
servicing the system.
5. If the system is the only system in the rack, follow these placement guidelines:
v 7014 T42 rack, start from bottom or center the drawers about the 17th EIA
v 7014 T00 rack, start from bottom or mount rails so that the top drawer will not
v 7014 S00 rack, there are no specific guidelines for this rack.
6. The CEC drawer requires 5 EIA units (8.75 inches) service clearance from the top
of the 7014 Model T00 and T42 rack. It should never be installed in the top most
position in these racks.
7. Early H80 I/O drawers require 4 EIA units service clearance from the top of the rack
when placed in their rear service position. These early drawers have a rear service
stop latch 11.25 inches (285.75mm) from the rack mounting flange at the front of
the drawer. The redesigned drawers have a rear service stop latch 5.75 inches from
installing the RS/6000 Enterprise Server Model H80, or Eserver pSeries 660
Models 6H0 and 6H1 rails.
drawers. Refer to the following notes for specific instructions.
location.
exceed 32nd EIA location.
Note: In order to address concurrent serviceability issues on racks with multiple
systems installed, it is suggested that the 1st EIA unit be left vacant to
allow the bottom drawer room to pass over the cables when the drawer is
moved into the rear service position.
Chapter 1. Setting Up the System
5