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EMC Fibre Channel Disk-Array Processor Enclosure (DPE) Hardware Reference
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Glossary
The terms defined here are important to installing and maintaining a
storage system.
A
ALPA (arbitrated loop
physical address)
An 8-bit address that uniquely identifies an SP (or other device)
on an FC-AL loop.
bind In the context of a disk-array storage system, the procedure by
which you hardware-format one or more disk modules into one
LUN (logical unit) — usually as one several types of RAID group.
B
BTU (British Thermal
Unit)
A standard measure of a device’s heat output.
C
cache See storage-system caching.
CRU (customer-
replaceable unit)
A hardware component, such as a disk module, that anyone can
install or replace.
D
DAE (Disk Array
Enclosure)
A storage device that includes an enclosure, up to 10 disk
modules, one or two Fibre Channel LCCs, and one or two power
supplies.