Instruction Manual

Enclosure Services
Interface
See ESI.
Enclosure Services
Processor
See ESP.
Enterprise Virtual
Array
The Enterprise Virtual Array is a product that consists of one or more storage
systems. Each storage system consists of a pair of HSV controllers and the disk
drives they manage. A storage system within the Enterprise Virtual Array ca n be
formally referred to as an Enterprise storage system, or generically referr ed to
as the storage system.
Enterprise Virtual
Array rack
A unit that holds controller enclosures, disk drive enclosures, power d istribution
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 D ischarge. 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 disk drives.
ESP Enclosure Services Processor. An EMU that implements an enclosure’s ser vices
process.
event Any significant change in the state of the Enterprise storage system hardware or
software component reported by the controller to HP Command View EVA.
See also controller event, 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
1,15 2,921,504,606,846,976 bytes. One exabyte is equivalent to 1, 024
petabytes.
fabric A Fibre Channel fabric or two or more interconnected Fibre Channel es allowing
data transmission.
fabric port A port which is capable of suppor ting an attached a rbitrated loop. This port on
a loop will have the AL_PA hexadecimal address 00 (loop ID 7E), giving the
fabricthehighestpriorityaccesstotheloop. Aloopportisthegatewaytothe
fabric for the node ports on a loop.
failover The process that takes place when one controller assumes the workload of
a failed companion controller. Failover continues until the failed controller is
operational.
fan The variable speed airflow device that cools an enclosure or element by forcing
ambient air into an enclosure or element and forcing heated air out the other
side.
See also blower.
170
Glossary