Compaq StorageWorks HSG60 ACS Solution Software V8.6 for Compaq Tru64 UNIX Installation and Configuration Guide

1–8 HSG60 ACS Solution Software Version 8.6 for Compaq Tru64 UNIX Installation and Configuration Guide
Figure 1–5. Typical multiple-bus configuration
Selecting a Cache Mode
The cache module supports read, read-ahead, write-through, and write-back caching
techniques. The cache technique is selected separately for each unit. For example, you can
enable only read and write-through caching for some units while enabling only write-back
caching for other units.
CXO7094B
Host
port 1
active
Host
port 2
active
Host
port 2
active
Host
port 1
active
D100 D101 D120D0 D1 D2
Host 1
"RED"
Controller A
Controller B
All units visible to all ports
FCA1 FCA2
Host 2
"GREY"
FCA1 FCA2
Host 3
"BLUE"
FCA1 FCA2
Switch
or hub
Switch
or hub
NOTE: FCA = Fibre Channel Adapter