Clustering
Disk-to-Disk Backup
Downward
Compatible
FireWire
Hot
Swap Benefit
RAID
Overview
RAID
Comparison
Repeater
Benefits
SAN
Overview
Termination
Basics
Interface
& Connector
Reference
SCSI
Connectors
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Storage Dictionary
- 8B/10B
- In
Fibre Channel a type of encoding and decoding bytes to reduce
errors in transmission. This process is patented by IBM
Corporation, which has agreed to a royalty-free, one-time
documentation fee for use of its patent.
- ANSI
- American
National Standards Institute. A standards-setting, non-government
organization, which develops and publishes standards for
voluntary use in the USA. ANSI is located at 1430 Broadway,
New York, NY 10018 (212) 642-4900.
- AppleTalk
- The
Apple file serving protocol that competes with NFS and CIFS.
- arbitrate
- A process
of selecting on L_Port from a collection of several ports
that concurrently request use of the arbitrated loop.
- arbitrated
loop
- A loop
type of topology where two or more ports can be interconnected,
but only two ports at a time can communicate.
- arbitration
- Process
of selecting one respondent from a collection of several
candidates that request use of the SCSI bus concurrently.
- architecture
- Refers
to the way a system is designed and how the components are
connected with each other. There are computer architectures,
network architectures, and software architectures.
- ASCII
- American
Standard Code for Information Interchange. Pronounced "as-kee."
The most popular coding method used by small computers for
converting letters, numbers, punctuation and control codes
into digital form. Once defined, ASCII characters can be
recognized and understood by other computers and communication
devices. ASCII represents characters, numbers, punctuation
marks or signals in seven on-off bits. For example: capital
"C" is 1000011, number "3" is 0110011, etc.
- asynchronous
transmission
- Transmission
in which each byte of the information is synchronized individually,
using interlocking REQ and ACK signals.
- AT
- Advanced
Technology. IBM's first 286-based PC, introduced in 1984.
It was the most advanced machine in the PC line and featured
a new keyboard, 1.2MB floppy and 16-bit data bus. AT-class
machines run considerably faster than XTs (8088-based PCs).
- ATA
- AT
Attachment. A disk drive implementation that integrates
the controller on the drive itself. There are several versions
of ATA, all developed by the Small Form Factor (SFF) Committee:
ATA: Also known as IDE, supports one or two hard
drives, a 16-bit interface and PIO modes 0, 1 and 2.
ATA/33:Also called Ultra ATA, Ultra DMA, UDMA and
DMA-33, supports multiword DMA mode 3 running at 33 MBps.
ATA/66:Version of ATA proposed by Quantum Corporation,
and supported by Intel, that doubles Ultra ATA's throughput
to 66 MBps.
ATA/100:Version of ATA proposed by Quantum Corporation,
and supported by Intel, that supports 100 MBps.
- ATM
- Asynchronous
Transfer Mode network protocol.
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