HP LH4r HP Netserver Service Handbook, Volume 1 - Low End - Page 88

nvironmental Services Monitoring ESM Module

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Environmental Services Monitoring (ESM) Module WARNING The ESM is not hot-swappable. You must shut off the HP Rack Storage/8 AC supply before removing the ESM from the enclosure. Fault LED Locking and Release Mechanism Bus 1 Output Connecor Bus 2 Input Connecor Dial (Not Used) Locking and Release Mechanism SCSI Connectors Bus 1 SCSI Connectors Bus 2 Option Switch Dial Power LED Over Temperature LED Specifications Temperature Operating Non-operating Humidity (noncondensing) Operating 82 Bus 1 Input Connecor Power LED Option Switch Bus 2 Output Connecor Provides two 68-pin, high-density SCSI interface connections for SCSI drive slots 1,2,3, and 4. Provides two 68-pin, high-density SCSI interface connections for SCSI drive slots 4, 5, 6, and 7. Switch one controls the operation of SCSI bus one and switch two controls SCSI bus two as explained below. Sets the module identification. It is not used in the HP Rack Storage/8 application. Shows green when the module has power . Goes on when the enclosure's ambient temperature is too high for proper operation. 5° to 35° C (40° to 95° F) -40° to 65° C (-40° to -140° F) 20% to 80% relative humidity

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82
E
nvironmental Services Monitoring (ESM) Module
WARNING
The ESM is not hot-swappable. You must shut off the HP Rack Storage/8 AC
supply before removing the ESM from the enclosure.
Bus 1 Input
Connecor
Bus 2 Input
Connecor
Bus 2 Output
Connecor
Bus 1 Output
Connecor
Locking and
Release Mechanism
Locking and
Release Mechanism
Fault
LED
Power
LED
Dial
(Not Used)
Option
Switch
SCSI Connectors Bus 1
Provides two 68-pin, high-density SCSI interface connections for
SCSI drive slots 1,2,3, and 4.
SCSI Connectors Bus 2
Provides two 68-pin, high-density SCSI interface connections for
SCSI drive slots 4, 5, 6, and 7.
Option Switch
Switch one controls the operation of SCSI bus one and switch two
controls SCSI bus two as explained below.
Dial
Sets the module identification. It is not used in the HP Rack
Storage/8 application.
Power LED
Shows green when the module has power .
Over Temperature LED
Goes on when the enclosure's ambient temperature is too high for
proper operation.
Specifications
Temperature
Operating
5°
to
35°
C (40°
to 95°
F)
Non-operating
–40° to 65° C (-40°
to -140°
F)
Humidity (noncondensing)
Operating
20% to 80% relative humidity