Manual

dual power supply
configuration
See redundant power confi guration.
dynamic capacity
expansion
A storage system feature that provides the ability to increase the size of an
existing virtual disk. Before using this feature, you must ensure that your
operating system supports capacity expansion of a virtual disk (or LUN).
EIA Electronic Industries Alliance. A standards organization specializing in the
electrical and functional characteristics of interface equipment.
EIP Event Information Packet. The event information packet is an HSV element
hexadecimal character display that defines how an event was detected. Also
called the EIP type.
electromagnetic
interference
See EMI.
electrostatic dis-
charge
See ESD.
element 1. In a drive enclosure, a device such as an EMU, power supply, disk, blower,
or I/O module. The object can be controlled, interrogated, or described
by the enclosure services process.
2. In the Open SAN Manager, a controllable object, such as the Enterprise
storage system.
Command View
EV A GUI
The graphical user interface (GUI) through which a user can control and monitor
a storage system. HP Command View EVA can be installed on more than one
storage management ser ver in a fabric. Each installation is a management
agent. The client for the agent is a standard browser.
EMI Electromagnetic Interference. The impairment of a signal by an electromagnetic
disturbance.
EMU Environmental Monitoring Unit. An element which mo n itors the status of a n
enclosure, including the power, air temperature, and blower status. The EMU
detects problems and d isplays and reports these conditions to a user and the
controller. In some cases, the EMU implements corrective action.
enclosure A unit used to hold various storage system devices such as disk drives,
controllers, power supplies, blowers, an EMU, I/O modules, or blowers.
enclosure a ddress
bus
An Enterprise storage system b us that interconnects and identifies controller
enclosures and disk drive enclosures by their physical location. Enclosures
within a reporting group can exchange environm ental data. This bus uses
enclosure ID expansion cables to assign enclosure numbers to each enclosure.
Communications over this bus do not involve the Fibre Channel drive enclosure
bus and are, therefore, classified as out-of-band com munications.
enclosure number
(En)
One of the vertical rack-mounting positions where the enclosure is located.
The positions are numbered sequentially in decimal numbers starting from the
bottom of the cabinet. Each disk enclosure has its own enclosure number. A
controller pair shares an enclosure number. If the system has a n expansion rack,
the enclosures in the expansion rack are numbered from 15 to 24, starting
at the bottom.
enclosure se rvices Those services that establish the mechanical environmental, electrical
environmental, and external indicators and controls for the proper operation
and m aintenance of devices with a n enclosure as described in the SES SCSI-3
Enclosure Services Command Set (SES), Rev 8b, American National Standard
for Information Ser vices.
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