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4.2.6 Unique Identifier
The unique identifier is a user-specified, 16-bit hexadecimal number that is
used to assign a FC port number to the Primary Controller. Each controller
is assigned a separate hexadecimal number and the firmware then
determines which unique identifier to use. To see how to use the front panel
LCD screen or the terminal emulation program to enter the unique identifier,
please refer to the Fibre to SATA RAID Subsystem Operation Manual.
4.2.7 ID/LUN Mapping
The host ID/LUN mapping determines I/O load distribution. Different
logical groups of drives are mapped to the LUN numbers under a host ID.
For a multi-host operation, a logical drive configuration can be mapped to
different ID/LUN combinations. In this case, the file locking mechanism is
necessary. ID/LUN mapping procedures are described fully in the Fibre to
SATA RAID Subsystem Operations Manual.
4.3 DIP Switch
The DIP switch on the enclosure configuration card is located on the upper
left corner of the enclosure rear panel. (See Figure 4-1) The first and the last
three (3) switches marked from 1 to 3 and 6 to 8 are reserved. The
remaining two (2) switches marked 4 and 5 can adjust the Fibre Channel
data speeds and enable/disable the bypass functionality. (See Table 4-1)
DIP
1 - 3
Subsystem Connection and Operation
Chapter 4: Subsystem Connection and Operation
Figure 4-1: DIP Switches on the Subsystem Rear Panel
Definition
Reserved
Default
Reference Section
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4-5
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