1-10 Disk Array Unit Overview
Port Mode
Port Mode establishes and maintains the logical disks accessible from each port
(controller) in the DAU. Table 1-2 shows logical disks assigned to each port in a DAU.
Figure 1-4 shows two business servers and the logical disks (LDs) assigned to each
using port mode. Business server A can access logical disks LD0, LD01, LD04, and
LD06 while business server B can access logical disks LD02, LD03, LD05, and LD07.
LD08 and LD09 are inaccessible from either business server.
Table 1-2. Setup of HD and LD Numbers
Logical Disk Number (LD)
Hard Disk (HD) Port
Number
00 01 02 03 04 05 06 07 08 09
0
√√
––
√
–
√
–––
1––
√√
–
√
–
√
––
Legends
√: Registers the HD number in the access limitation list as accessible number.
–: Registers the HD number in the access limitation list as inaccessible number.
Figure 1-4. Port Mode Logical Drives Assignments to Business Servers
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