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Chapter 5: System Monitoring
This Chapter describes the devices used to monitor the
2Gb SANbloc Series. The location of the monitoring LEDs
and how to interpret them is described.
Overview
The front mounted LS module is the main monitoring
device of the 2Gb SANbloc Series. This module is comple-
mented by status and fault LEDs, mounted on all the major
components of the enclosure, such as, disk drives, power
supplies, Advanced Cooling Modules (ACMs), and RAID
Controller. All these monitoring devices are discussed in the
following sections.
LS Module
The LS Module (Loop Resiliency and SES Module)
provides monitoring and control for the 2Gb SANbloc
Series. The module reports status and receives control infor-
mation over the Enclosure Services Interface (ESI) port of
any of the fourteen disk drives installed in the enclosure.
The LS Module also provides loop resiliency for the Fibre
Channel loop (in the form of Port Bypass Circuits).
The 2Gb SANbloc Series contains one LS Module as
standard. However, a second optional LS Module is
available to provide active/passive fail-over for the
enclosure services communication, and to provide a second
Fibre Channel Loop. Only one LS Module communicates
(using ESI communication) with the host system at any one
time, but both LS modules will continuously monitor the