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D-brick2 External Components
007-4377-002
127
Loop Resiliency Circuit (LRC) Modules
The D-brick2 uses a Fibre Channel arbitrated loop (FC-AL) to interface with the host
computer system. The FC-AL backplane incorporates two independent loops formed by
port bypass circuits within the LRC I/O modules. Figure 11-5 shows an LRC module.
Processors housed on the LRC modules provide enclosure management and interface to
devices on the backplane, a PSU/cooling module, and an ops panel to monitor internal
functions. These processors operate in a master/slave configuration to allow failover. See
the
SGI Total Performance 9100 (2Gb TP9100) Storage System User’s Guide (P/N
007-4522-00x)
for details.
Note:
The JBOD LRC I/O module can address up to 96 disk drives; a maximum of six
enclosures can be cabled together.
The enclosure may be configured with either one or two LRC I/O modules. If only one
module is installed, an I/O blank module must be installed in the unused bay.
Figure 11-5
D-brick2 Loop Resiliency Circuit (LRC) Module
RS232
FC-AL
Loops
ESI fault LED
FC-AL signal present LED
FC-AL signal present LED
RS-232 port
FC-AL signal present LED
FC-AL signal present LED
Summary of Contents for SGI Altix 3700 Bx2
Page 1: ...SGI Altix 3700 Bx2 User s Guide Document Number 007 4377 002 ...
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Page 70: ...46 007 4377 002 3 System Overview Figure 3 1 SGI Altix 3700 Bx2 Series Systems ...
Page 85: ...Tall Rack 40U 007 4377 002 61 Figure 4 1 Tall 40U Rack ...
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Page 90: ...66 007 4377 002 5 CR brick Figure 5 1 Front and Side View of CR brick ...
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