User Manual

Glossary
214 Enterprise Virtual Array 3000 User Guide
Enterprise Virtual Array rack
A unit that holds controller enclosures, disk drive enclosures, power distribution supplies, and
enclosure address buses that, combined, comprise an Enterprise Storage System solution. Also
called the Enterprise Storage System rack.
See also rack.
environmental monitoring unit
See EMU.
error code
The portion of an EMU condition report that defines a problem.
ESD
Electrostatic Discharge. The emission of a potentially harmful static electric voltage as a result
of improper grounding.
ESI
Enclosure Services Interface. The SCSI-3 engineering services interface implementation
developed for StorageWorks products. A bus that connects the EMU to the drives.
ESP
Enclosure Services Processor. An EMU that implements an enclosure’s services process.
event
Any significant change in the state of the Enterprise Storage System hardware or software
component reported by the controller to Command View EVA.
See also controller event, disk drive enclosure event, management agent event, and
termination event.
Event Information Packet
See EIP.
Event Number
See Evt No.
Evt No.
Event Number. A sequential number assigned to each Software Code Identification (SWCID)
event. It is a decimal number in the range 0-255.
exabyte
A unit of storage capacity that is the equivalent of 2
60
bytes or 1,152,921,504,606,846,976
bytes. One exabyte is equivalent to 1,024 petabytes.