DataDirect Networks EF2800, Руководство пользователя

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DataDirect Networks EF2800 FC RAID Storage System User Guide (V 1.0)
G l o s s a r y
Bus See channel.
Byte A group of binary digits stored and operated upon as a unit. A byte may
have a coded value equal to a character in the ASCII code (letters,
numbers), or have some other value meaningful to the computer. In
user documentation, the term usually refers to 8-bit units or characters.
1 kilobyte (K) is equal to 1,024 bytes or characters; 64K indicates 65,536
bytes or characters.
Cable Throughout this EF2800 user guide this term is used in accordance with
the preferred US context of: “an insulated flexible electric wire used for
the transmission of data signals between computer equipment.”
Note : Cable is UK preferred terminology for either a power cord or a
data cable:
CAPI EF2800 Configuration Application Programming Interface is available
for software engineers who need to develop a programmed interface
for managing EF2800 products.
Channel
A channel is a common physical path composed of wires or other
media, across which signals are sent from one part of a computer to
another. A channel is a means of transferring data between modules
and adapters, or between an adapter and SCSI or Fibre Channel
devices. A channel topology network consists of a single cable trunk
that connects one workstation to the next in a daisy-chain
configuration. All nodes share the same medium, and only one node can
broadcast messages at a time.
Character A representation, coded in binary digits, of a letter, number, or other
symbol.
Characters Per
Second
A data transfer rate generally estimated from the bit rate and the
character length. For example, at 2400 bps, 8-bit characters with Start
and Stop bits (for a total of ten bits per character) will be transmitted
at a rate of approximately 240 characters per second (cps).