Environmental Monitoring Unit (EMU)
3–8 UltraSCSI RAID Enclosure
Connecting the EMU Communication Bus
In an expansion configuration you must establish communications between
the master EMU and each expansion EMU. To establish communications
you must connect a communication port on each EMU to a communication
port on another EMU (see Figure 3–4). By establishing an EMU—EMU
communication bus you ensure that the master EMU can monitor and
control all the enclosures in the UltraSCSI subsystem.
Figure 3–4 EMU Communication Connections
CXO5820A
DIGITAL recommends that use a BN26M cable (see Table 3–1) no longer
than 4 m (13.1 ft) to connect the EMUs.
Table 3–1 EMU Communication Cables
Length
Part
Description
Meters
Feet
Number
8-conductor 24 AWG, PVC, round cable assembly
with:
2–8 position (8MP). locking, plug connectors
CXO5747A
0.2
0.5
1.0
3.0
4.0
0.7
1.0
1.6
9.8
13.1
BN26M–0B
BN26M–0E
BN26M–01
BN26M–03
BN26M–04
Summary of Contents for StorageWorks UltraSCSI DS-BA370 Series
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