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Chapter 1. General description 9
four attached 7311 Model D20 drawers, the combined system supports up to 34 PCI-X
adapters (in a maximum configuration, remote I/O expansion cards are required) and
56 hot-swappable SCSI disks, for a total internal capacity of 16.8 TB using 300 GB disks.
PCI-X and PCI cards are inserted from the top of the I/O drawer down into the slot from the
drawer’s front service position. The installed adapters are protected by plastic separators,
which are designed to prevent grounding and damage when adding or removing adapters.
The drawer has the following attributes:
4U rack-mount enclosure assembly
Seven PCI-X slots 3.3 volt, keyed, 133 MHz hot-pluggable
Two 6-pack hot-swappable SCSI bays (optional)
Redundant hot-swap power (optional)
Two RIO-2 ports and two SPCN ports
The I/O drawer has the following physical characteristics:
Width: 482 mm (19.0 in.)
Depth: 610 mm (24.0 in.)
Height: 178 mm (7.0 in.)
Weight: 45.9 kg (101 lb.)
Figure 1-3 shows the different views of the 7311-D20 I/O drawer.
Figure 1-3 7311-D20 I/O drawer views
Note: A 7311 Model D20 I/O drawer initial order or an existing 7311 Model D20 I/O drawer
that is migrated from another pSeries system must have the RIO-2 ports available
(FC 6417).
I/O
Drawer
Service
Access
Adapters
SCSI disk locations and IDs
8 9 A B C D 8 9 A B C D
Operator panel
Front Rear
Power supply 2
Power supply 1
Rack indicator
PCI-X slots
RIO ports
SPCN ports
Reserved ports
1 2 3 4 5 6 7