Chapter 2. IBM iSeries SB2 and SB3 models 27
2.2 9406 Model SB2 and SB3 system unit schematics
The SB2 system tower is packaged in a Model 830. For the system diagrams, see 6.6, “9406
Model 830 system unit schematic” on page205.
The SB3 system tower is packaged in a Model 840. For the system diagrams, see and 6.7,
“9406 Model 840 system unit schematic” on page207.
You can find the schematics for towers that are supported by Models SB2 and SB3 in
Chapter 8, “IBM iSeries towers schematics” on page293.
Note 1 Commercial Processing Workload (CPW) is used to measure the performance of all iSeries and AS/400e processors
announced from September 1996 onward. The CPW value is measured on maximum configurations. The type and number
of disk devices, the number of workstation controllers, the amount of memory, the system model, other factors, and the
application running determine what performance is achievable.
Note 2 The total number of tape drives does not increase.
Note 3 One line is used if the #5544 System Console on Operations Console is used on a #9771 WAN adapter. One line might
be used if the #5546 or #5548 System Console on LAN is selected and the #0367 Operations Console PCI Cable is
connected.
Note 4 There must be one CD-ROM, DVD-ROM, or DVD-RAM per system.
Note 5 Because only three controllers and two towers are allowed on the SB3, a maximum of four high-speed link (HSL) ports and
two HSL loops are usable to attach towers. Other ports and loops are usable for clustering only.
Note 6 Includes a base CD-ROM in the migration tower (no feature code).
Note 7 The Base MFIOP (multifunction input/output processor) (CCIN 671A) is included in this total.