4-1
Environmental Monitoring
Chapter 4: Environmental Monitoring
This Chapter deals with the various methods used to monitor the RAIDStation7
Ultra160 SCSI Storage Array. There are two methods used:
•
Versatile Environmental Monitor (VEM) - The VEM is a card that plugs into
the backplane of the Storage Array. The VEM monitors the ACMs, power
supply voltage outputs and enclosure temperature.
•
Device Carrier LEDs - All device carriers have two LEDs on the front which
are driven by the VEM. These LEDs give details about the operational status
of the hard disk drives and power supplies.
