Sun Microsystems 5500, Reference Manual

Page: 69 / 304

Chapter 4 I/O+ Boards and Components 4-11
4. If a board is not immediately replaced, a load board (Enterprise 6500 systems
only) or a filler panel (Enterprise 4500 and 5500 systems only) must be installed in
its place before powering on the system.
See Section 4.2 “Filler Panels and Load Boards.”
4.5.3 Installing a Board
4.5.3.1 Board Slot Selection
Note –
Logically there is no difference between the board slots in the front or rear of
the card cage, and each slot can accept any board type. It is suggested that
CPU/ boards be installed in the front slots, and I/O+ and Disk boards be
installed in the rear slots because of cabling. Should the need arise, however, any of
these three board types can be placed in any of the numbered board slots, with the
exception of slot 1. Slot 1 should be used by the first I/O+ board because it is the
only slot connected to the onboard SCSI devices.
The first CPU/ board is placed in slot 0, followed sequentially by all
remaining even numbered slots. If there are boards remaining, they can be installed
sequentially in odd numbered slots, if available, in the system rear (with the
exception of slot 1 as noted above) (
FIGURE 4-9
and
FIGURE 4-10
).
For I/O+ boards being placed in the rear of the system, ensure that the component
side is up. If the boards are placed in the front of the system, ensure that the
component side is down (
FIGURE 4-11
).