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RA7000 / ESA10000 High Availability Solution Kit for HP-UX
2–2 EK–HAHPU–MH. B01
2.2 Mid-Bus RAID Cluster Layout - (SCSI Bus Interconnect)
To connect two HP hosts on the two ends of the SCSI bus (e.g., a Mid-Bus RAID
cluster layout), with a RAID subsystem, reference Figure 2-1 and follow these
steps:
1. Attach a Y-cable (BN21W-0B) to the HD68-pin host adapter on Host A.
2. Attach a Y-cable (BN21W-0B) to the HD68-pin host adapter on Host B.
3. Attach (compatible) end of a 5M adapter cable (BN38C-05) to one end of
the Y-cable attached to Host A.
4. Connect the other end (VHDCI compatible) of the adapter cable to the end
of a tri-link connector on a subsystem controller.
5. Attach (compatible) end of the short adapter cable (BN38E-0B) to one end
of the Y-cable attached to Host B.
6. Connect the other end (VHDCI-compatible) of the adapter cable to the end
of UltraSCSI cable BN37A-05.
7. Remove the terminator that occupies the tri-link connector on the subsystem
controller.
8. Attach the remaining end of the VHDCI UltraSCSI cable attached to Host A
to the available tri-link connector on the subsystem controller.
9. Connect a terminator (H879-AA) to the available end of the Y-cable on Host
A, and to the available end of the Y-cable on Host B.
Figure 2–1 Mid-Bus RAID Cluster Layout - (SCSI Bus Interconnect)
HOST A HOST B
RA7000 or E
S
A10000
Subsystem
HD68 Host
Adapter
HD68 Host
Adapter
Te r mi n a t or
H879-AA
BN37A-0E
Tri-Link
BN21W-0B
Y-Cable
BN21W-0B
Y-Cable
BN38C-05
VHDCI-to-HD68
Adapter Cable
BN38E-0B
VHDCI-to-HD68
Adapter Cable
BN37A-05
VHDCI-to-VHDCI
UltraSCSI Cable
S
HR-1
0
9
2
Terminator
H879-AA