iSeries Model 890 255
Draft Document for Review October 18, 2004 5486m890.fm
High-speed link on Model 890
The Model 890 (24- and 32-way models) supports up to 14 HSL loops, 12 of
which can be optical fiber HSL loops. The 16- and 24-way models support up to
12 HSL loops, 10 of which can be optical fiber HSL loops. The optical fiber HSL
loop extends the distance between the Model 890 system unit and the I/O units
from a limit of 15 meters prior to V5R2, to a maximum of 250 meters. The extra
length can help to improve data reliability and protection.
See “High-speed link” on page 293 for information about supported high-speed
link (HSL) cables and HSL loop maximums. Further information can be found 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, which is
available on the Web at:
http://www-1.ibm.com/servers/eserver/iseries/ha/systemdesign.html
Model 890 PCI cards and features
The Model 890 is a PCI-based technology system. Since migration towers
cannot attach to the Model 890, System Products Division (SPD) cards in
systems or towers migrating to the Model 890 must be replaced with PCI card
equivalents. Refer to “Hardware no longer marketed by IBM” on page 840 for a
list of SPD functions not supported by PCI adapters.
See the table on page 104 for the number of maximum features supported by the
total system and in the Model 890 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. 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 Some features may be withdrawn but are in the table for reference.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: You can find line cord and power receptacle specification information on
the Web at:
http://www.ibm.com/eserver/iseries/infocenter
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