AcQuisition Technology Quad M-module Carrier i4000 Guía de usuario Pagina 34

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18 007-4522-003
1: Storage System Overview
Figure 1-12 Dual-port RAID Loopback LRC I/O Module
JBOD LRC I/O Module
The JBOD LRC/IO module 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. Processors housed on
the LRC modules provide enclosure management and interface to devices on the
backplane, PSU/cooling module, and ops panel, to monitor internal functions. These
processors operate in a master/slave configuration to allow failover.
Note: The JBOD LRC I/O module can address up to 96 disk drives; thus, six JBOD
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.
Host 0Host 1
Expansion
RS 232
Fault
2 Gb
2 Gb
NO RAID INSTALLED
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