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Hitachi VSP User and Reference Guide
Glossary–2
controller chassis
The hardware assembly that contains the logic and processing
components of the Virtual Storage Platform, including the front-end
directors, virtual storage directors, cache memory, switches, and back-
end directors. The Virtual Storage Platform storage system can be
configured with one or two control chassis.
D
disk array
Disk array, or just array, is a complete storage system, including the
control and logic devices, storage devices (HDD, SSD), connecting
cables, and racks.
drive chassis
The hardware component of the Virtual Storage Platform that houses
disk drives and/or flash drives. The Virtual Storage Platform can be
configured with up to 16 drive chassis.
dynamic provisioning
An approach to managing storage. Instead of “reserving” a fixed amount
of storage, it removes capacity from the available pool when data is
actually written to disk. Also called thin provisioning.
F
FED
See front-end director.
FBX
See flash chassis.
FMD
See flash module.
FICON
Fibre Connectivity
flash chassis
A cluster of four flash boxes that contain up to 48 flash drives and fit in
the space of a DKU drive chassis. The factory designation is FBX.
flash drive
A data drive that is a solid-state memory device instead of a rotating
hard disk.
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