Table of Contents
Advertisement
limit the total number of high bandwidth and extra-high bandwidth adapters. If you must expand the
I/O capacity of the system for extra-high bandwidth adapters, use high-performance I/O expansion units
such as 5610, 5685, 5796, 5802, or 5877.
The following tables provide guidelines on the maximum number of high bandwidth and extra-high
bandwidth adapters you can use and still maintain optimum performance.
Note: Because of the many types of application workloads, these guidelines cannot cover all cases. The
numbers in the following tables are suggestions for single types of adapters that are running exclusively.
For systems with mixed adapter types or that have high aggregate bandwidth requirements, consult an
IBM representative for more guidelines.
Extra-high bandwidth storage adapters
Table 7. Maximum number of extra-high bandwidth storage adapters for best performance
Adapters in
System
system slots C4
configuration
to C7
System with one
3 (2 for 5735)
processor chip
module unit
System with two
3 (2 for 5735)
processor chip
module units
1
Split adapters across both internal slots C4 to C7 and the four-slot riser slots C1-C1 to C1-C4 if FC 5610 or 5685 is
used.
You can install extra high-performance adapters in three out of the four base slots and in three out of four of FC
5610 or 5685 slots.
Extra-high bandwidth Ethernet adapters
Table 8. Maximum number of extra-high bandwidth Ethernet adapters for best performance
Adapters in
System
system slots C4 -
configuration
C7
System with one
2
processor chip
module unit
System with two
2
processor chip
module units
For best performance, extra high-bandwidth Ethernet adapters must be installed in 5802 or 5877 expansion drawers
when available, instead of using internal system unit slots. A maximum of two adapters in slots P1-C4 through
P1-C7, and a maximum of two adapters in slots P1-C1-C1 through P1-C1-C4 can be installed.
Low profile
adapters in
system slots
C1-C1 to C1-C4 if
Adapters per
FC 5610 or 5685
5615 or EJ04 with
is used
one or more 5796
1
3
(2 for 5273)
4
1
3
(2 for 5273)
4 (8 in 2 drawers) 6 (12 in 2
Low profile
adapters in
system slots
C1-C1 to C1-C4 if
Adapters per
FC 5610 or FC
5615 or EJ04 with
5685 is used
one or more 5796
2
2
2
2 (4 in 2 drawers) 4 (8 in 2 drawers) 8
Adapters per
5615 or EJ04 with
one or two 5802
System
or 5877
maximum
6 (4 for 5735)
9
15 (10 for 5735)
drawers) (4 or 8
for 5735)
Adapters per
5615 or EJ04 with
one or two 5802
System
or 5877
maximum
4
4
PCI adapter placement
49
Hide quick links:
Advertisement
Table of Contents
