E
emulation
The operation of a storage system to emulate the characteristics of a
different
storage system. For
device emulation, the mainframe host recognizes the logical devices on the storage system as 3390-
x devices. For controller emulation, the mainframe host recognizes the control units (CUs) on the
storage system as 2105 or 2107 controllers.
The storage system operates the same as the storage system being emulated.
emulation group
A set of device emulation types that can be intermixed within a RAID group and treated as a group.
external application
A software module that is used by a storage system but runs on a separate platform.
external volume
A logical volume whose data resides on drives that are physically located outside the Hitachi storage
system.
F
FC
Fibre Channel; FlashCopy
FC-AL
fibre-channel
arbitrated loop
FCP
fibre-channel
protocol
FCSP
fibre-channel
security protocol
FICON
Fibre Connectivity
flash
drive
A data drive that uses a solid-state memory device instead of a rotating hard disk.
flash
module
A high speed data storage device that includes a custom
flash
controller and several
flash
memory
sub-modules on a single PCB.
FMD
See
flash
module
H
HBA
host bus adapter
HDD
hard disk drive
HDT
Hitachi Dynamic Tiering
Glossary
System Administrator Guide for VSP Gx00 models and VSP Fx00 models
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