Adaptec LSM-FC2002 - Loop Resiliency And SES Module Expansion, Installation Manual

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Split Fibre Channel Loop Operation (Quad Loop)
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Split Fibre Channel Loop Operation (Quad Loop)
The 2Gb SANbloc Series LS module allows for split FC
Loop operation, with two dual fibre channel loops of seven
disk drives each. In this split loop mode the primary port (I/
O Slot A) will form a loop using the first seven drives, 1 to 7
(from right hand side of rackmount systems). The expansion
port (I/O Slot B) will form a second loop using the
remaining 7 drives, 8 to 14 (from right hand side of
rackmount systems).
Note: If the enclosure has dual LS modules the following
procedures must be applied to both LS modules.
CAUTION: Enclosures operating in split loop mode can not be
daisy chained to other enclosures.
Setting Up Split Loop
Operation
To operate the 2Gb SANbloc Series enclosure in split fibre
channel loop mode, follow this procedure:
1 Remove the LS module from the front of the enclosure.
2 On the LS Module locate the jumper position JP3 (Figure 2-1).
3 To operate in split loop mode, install a jumper at JP3.
4
Replace the LS module.
Removing Split Loop
Operation
To remove split fibre channel loop operation from the 2Gb
SANbloc Series enclosure, follow this procedure:
1 Remove the LS module from the enclosure and locate jumper
JP3 (Figure 2-1).
2
To remove split loop operation, remove jumper JP3.
3
Replace the LS module.