AS/400e server SB2
196 AS/400e System Handbook
written to disk. An external UPS is recommended to protect the system unit and any external
components against utility power outages. Continuously Powered Mainstore (CPM) is not
supported on the Model SB2. An external UPS can allow the system to run uninterrupted for
longer than thirty seconds when utility power is lost. It can also maintain power long enough
to ensure that the system successfully completes a shutdown to avoid losing data.
System Power
• Processor Enclosure
– Power Supply (1100 Watt) (CCIN 515B)(Quantity two)
– Regulator (CCIN 278B)
• Base I/O Tower (#9074)
– Power Supply (765 Watt) (CCIN 515A) (Quantity two)
– AC Input/Charger
– Batteries (Quantity four)
#9074 Base I/O Enclosure
The #9074 is the base I/O tower shipped on Model SB2. The #9074 supports up to four disk
units, up to 11 PCI IOAs and up to two removable media units.
One internal HSL cable is included as base. Optionally, one of the following HSL cables may
be selected:
• #1460 - 3m Copper HSL cable
• #1461 - 6m Copper HSL cable
• #1462 - 15m Copper HSL cable
The #9074 has a #9943 Base PCI IOP and a #9748 PCI RAID Disk Unit Controller. It also has
PCI slots for up to 11 PCI IOAs, space for four disk units, space for two removable media
devices, one battery backup, and redundant/hot swap power supplies.
The #9074 is capable of controlling Ultra2 SCSI disk units.
The 11 PCI IOAs are supported (driven) by the base #9943 PCI IOP and by feature #2843
PCI IOPs or feature #2790 Integrated Netfinity Servers.
The #9074 also supports up to two removable media devices (internal tape or CD-ROM),
which are supported by the #9748.
The Model SB2 is based on the Model 830. For system diagrams, please see the “AS/400e
server 830” on page 163.
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