Product manual

CDA 7 5630 Product Manual
G-4 77 A1 69UP Rev00
F
Fast Write
In Symmetrix, a write operation at cache speed that does not require immediate transfer of data to
disk. The data is written directly to cache and is available for later destaging.
FBA
Fixed Block Architecture. Disk device data storage format using fixed size data blocks.
Fibre channel
Fibre channel speeds up to 100 MB/sec.
Field Replaceable Unit (FRU)
A component that is replaced or added by service personnel as a single entity.
G
Gigabyte (GB)
10
9
bytes.
The GB
2
value is based on the convention: 1 GB = 1024x1024x1024 bytes.
The GB
10
value is based on the convention: 1 GB = 1000x1000x1000 bytes.
H
HACMP
High Availability Clustered Multiprocessing.
Head and Disk Assembly (HDA)
A field replaceable unit in the Symmetrix subsystem containing the disk and actuator.
I
ICDA
Integrated Cached Disk Array.
ICKDSF
See Device Support Facilities program.
Identifier (ID)
A sequence of bits or characters that identifies a program, device, controller, or system.
IML
Initial microcode program loading.
Index Marker
Indicates the physical beginning and end of a track.