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LS Module
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system. If the active LS Module fails, then the ESI commu-
nication with the host system will be taken over by the
passive LS Module.
LS Module Features • Monitoring/Control for 2 Power Supplies and 2 ACMs
• Reports status and receives control information via the FC loop
• Microcontroller for data processing, control and communica-
tions
• Volatile and non-volatile memory for the microcontroller
• Temperature sensor
• Audible alarm with manual and software disable
• FC link monitoring and status information
• Firmware download capability
• Reporting of PSU, LS module, I/O module, and backplane
serial number and revision
• I/O module and backplane type reporting
• Control of 6 front LEDs for enclosure and module status
• I/O option slot status monitoring
2Gb SANbloc
Enclosure LEDs
The 2Gb SANbloc Series has six LEDs located on each of
the front mounted LS Modules. These LEDs show the status
of the enclosure, power supply, Fibre Channel Loops, LS
Module status and the operating mode of the enclosure (1GB
or 2Gb operation). Figure 5-1 shows the location of the
LEDs