AS/400e server SB2 195
AS/400e server SB2
With the implementation of new PCI technologies in the AS/400e server SB2 comes the
requirement for a better understanding of the configuration rules associated with the various
I/O features of the AS/400 system. Prior AS/400 models required input/output processors
(IOPs) to be in specific slots in the system and expansion towers. If high performance in
particular areas was required, a single input/output adapter (IOA) may have been assigned to
a single IOP. This resulted in unassigned slots in the tower, wasting valuable slots. The new
PCI I/O architecture provides more flexibility in the placement of IOPs and IOAs. This results
in more efficient use of card slots, potentially resulting in a lower cost of implementation.
Increased flexibility of configuration also adds a degree of complexity to the configuration
process.
The following functions do not have equivalent function PCI cards for the Model SB2:
• ASCII Adapter
• V.25 Autocall cable
• Select standby mode
PCI adapters also do not support X.21 switched WAN dialup or Shorthold Mode WAN.
The fundamental bus architecture of the AS/400 system is unchanged when using PCI
adapters. The AS/400 IOP continues to off load the main processor; isolate the host from
adapter and network errors; and manage, configure, and service the adapters. PCI
architecture offers advantages in flexibility over non-AS/400 system structures.
Processor Feature
#2315 Model SB2 Processor (IStar 8-way)
• Processor Capacity Card (CCIN 2315)
• Processor 0 (CCIN 245D)
• Processor 1 (CCIN 245D)
Main Storage
All main storage on the Model SB2 is base main storage. The system includes two base Main
Storage Expansion Cards (CCIN 2881) and 48 256 MB Main Storage DIMMs (CCIN 300F).
Power and Packaging
The Model SB2 includes an internal battery that is automatically activated in the event of
utility power loss. The battery provides full operating power for a short time to all components
within the system unit, but not to any external components. This can allow the system to run
uninterrupted for a short time (30 seconds or less). For longer power outages, the system will
use the battery to attempt an orderly shutdown to avoid losing data in main storage that is not
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