iSeries Model 520 123
Draft Document for Review October 18, 2004 5486m520.fm
Mixing of HSL and HSL-2 towers is permitted with the correct combination of
cables.
Rack mounted Model 520 system units can only attach to HSL-2/RIO-G cables
2.5m or longer and can only attach to SPCN cables 3m or longer. Shorter cable
lengths do not allow the system unit to be pulled out from the rack far enough for
concurrent maintenance.
See “High-speed link” on page 293 for information about supported HSL cables
and HSL loop maximums. You can find further information in High-speed Link
Loop Architecture for the IBM Eserver iSeries Server: OS/400 Version 5
Release 2, REDP-3652, and the HSL Rules presentation available at:
http://www-1.ibm.com/servers/eserver/iseries/ha/systemdesign.html
Model 520 PCI cards and features
The Model 520 is a PCI-based technology system. The number of PCI cards that
can be supported in a Model 520 depends on whether an input/output (I/O) tower
is attached and the number of PCI slots. PCI card placement rules and LPAR
configuration considerations also affect the number of slots supported.
See the table on page 84 for the number of maximum features supported by the
total system and in the Model 520 system unit. See Chapter 17, “iSeries I/O
processors” on page 319, and Chapter 18, “iSeries I/O adapters and controllers”
on page 339, for full descriptions of the features that are supported. See “Not all
features are supported on all models. Some features may be withdrawn but are
in the table for reference. AIX specific adapters are not described in this book.” on
page 344 for supported Linux Direct Attach features.
Note: The #6587 Model 520 Rear Cover should only be used with deskside
configurations which have do not have HSL cables.
Do not use the #6587 if you have an HSL-attached IXA, #5074, #5079,
#5095/#0595, #5094, #5294, or #5088/#0588 tower. The #6587 is not deep
enough to allow HSL cables to bend gradually enough to ensure the cables
will not be damaged.
There is no rear cover associated with the rack mounted 520.
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