5486Towr.fm Draft Document for Review October 18, 2004
304 IBM Eserver i5 and iSeries System Handbook
xSeries Adapter reports to the iSeries Hardware Service Manager as CCIN
2689.
The external xSeries server has SPCN control. SPCN cabling for the external
xSeries server follows the same rules as SPCN cabling for existing HSL-attached
towers.
The iSeries and Eserver i5 servers and features require OS/400 V5R2 or i5/OS
V5R3. The iSeries Integration for Windows Server licensed program 5722-WSV
provides the necessary software and device drivers that enable Windows Server
to run on the IXA server. 5722-WSV is included with all i5/OS shipments. Refer to
page 547 for iSeries Windows Integration and Microsoft Cluster Support.
The external xSeries server attaches to Model 270, 520, 550, 570, 595, 800,
810, 820, 825, 830, 840, 870, and 890 servers via a copper HSL. Optical HSL is
not supported.
The number of Integrated xSeries Servers and Integrated xSeries Adapters that
can be attached varies by model, HSL loops, and number of I/O towers. For
example, the Model 810 supports up to 13 Integrated xSeries Servers and seven
Integrated xSeries Adapters. The Model 890 supports up to 48 Integrated
xSeries Servers and 60 Integrated xSeries Adapters.
Refer to the xSeries servers maximums table on page 299 for the maximum
external xSeries servers by model
Refer to the HSL system maximums table on page 299 for the maximum external
xSeries servers per HSL loop on each iSeries model. The table on Page 288
identifies the HSL cables which can be attached directly to each iSeries
supported expansion tower.
For performance and stability reasons, place the external xSeries servers on
their own loop, if possible, or in the middle of an HSL loop. That is, place the
external xSeries server between the end of the HSL strings (redundant part of
the loop) that attach to each HSL port.
We recommend that no I/O tower should communicate with the system by having
its data flow through an external xSeries server. However on the Model 820 with
a migration tower, Integrated xSeries Adapters cannot be adjacent to the
migration tower. This means that, in some configurations, there are I/O towers
with their data flow through an Integrated xSeries Adapter.
Do not surround any I/O tower with Integrated xSeries Adapters. Switched towers
are required to be adjacent to the alternate system or a tower owned by the
alternate system. If an external xSeries server must be on a loop with a switched
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