IBM p5 550, Technical Overview And Introduction

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IBM System p5 550 and 550Q Technical Overview and Introduction
7311 Model D20 internal SCSI cabling
A 7311 Model D20 supports hot-swappable disks using two 6-pack disk bays for a total of 12
disks. Additionally, the SCSI cables (FC 4257) are used to connect a SCSI adapter (that can
have various features) in slot 7 to each of the 6-packs, or two SCSI adapters, one in slot 4 and
one in slot 7. See Figure 2-10 for a drawing of the SCSI cables internal routing.
Figure 2-10 7311 Model D20 internal SCSI cabling
2.8.3 7311 I/O drawer RIO-2 cabling
As described in 2.8, “External I/O subsystem” on page 43, you can connect up to four I/O
drawers in the same loop and up to eight I/O drawers to the p5-550 or p5-550Q system. Each
RIO-2 port can operate at 1 GHz in bidirectional mode and is capable of passing data in each
direction on each cycle of the port. Therefore, the maximum data rate is 4 GBps per I/O
drawer in double barrel mode.
There can be up to two RIO-2 loops in any p5-550 or p5-550Q system. These features
provide up to four remote I/O ports for attaching up to eight 7311 Model D20 I/O drawers to
the system for an aggregate data rate of 4 GBps.
Figure 2-11 on page 45 shows how you could connect logically height I/O drawers to one
p5-550 or p5-550Q system. Actual cables should be routed according to installation
instructions.
Note: Any 6-pack and the related SCSI adapter can be assigned to a single partition. If
one SCSI adapter is connected to both 6-packs, both 6-packs can be assigned only to the
same partition.
Connect the SCSI cable feature to the SCSI adapter
in rightmost slot (7) as shown below:
to 6-pack
backplanes
to 6-pack
backplanes
If a SCSI card is also placed in slot 4, wire as shown below:
SCSI cables FC 4257 SCSI cables FC 4257