Ibm Eserver I5 Models 520, 550, 570, And 595 Tower And Drawer Support - IBM eserver i5 Handbook

5486Towr.fm
System maximums
I/O units and Integrated
xSeries Adapter cards
HSL OptiConnect loop:
Two systems
I/O units and Integrated
xSeries Adapter cards
HSL OptiConnect loop:
Three systems
I/O units and Integrated
xSeries Adapter cards
Notes: I/O unit maximums do not include the base I/O tower attached to Models 840, 870, and 890. An I/O unit contains
two HSL ports (0 and 1). The #5079 and #5294 I/O towers have two I/O units.
1
Model 825: Maximum of five Integrated xSeries Adapters on loops A and C. Maximum on loop B is eight.
2
Models 830 and 840: Maximum of eight Integrated xSeries Adapters. Limit on first loop is one, 0 if with migration tower.
Due to the high bandwidth of HSL, you should see comparable performance,
whether using copper or optical HSL, even though optical runs at a slower speed.
However, for intensive I/O bandwidth requirements (for example, large system
data mining), you may experience some performance degradation with optical
HSL. Use less than the allowed maximum number of I/O towers on an optical
HSL loop to optimize performance.
OS/400 V5R1 and supporting PTFs are required. Refer to Informational APAR
II12949 at:
http://www-912.ibm.com/n_dir/nas4apar.nsf/nas4aparhome
IBM Eserver i5 Models 520, 550, 570, and 595 tower and drawer
support
This section identifies the towers and drawers supported on IBM Eserver i5
Models 520, 550, 570, and 595.
The following table assumes the maximum number of processor features to
support the maximum number of loops. The maximum number of towers may be
less on other processor features supporting a lower maximum number of loops.
A base I/O tower, where applicable to a model is not included in these maximum
values.
IBM Eserver i5 and iSeries System Handbook
300
270 520 570 595 800
550
3 9 9 4
4 4
N/A N/A
Draft Document for Review October 18, 2004
810 820 825 830
8 9 9 9
4 4 4 4
N/A N/A 0 0
840 870 890
9 9 9
4 4 4
0 0 0