HP StorageWorks 8000, Руководство пользователя

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Glossary
258 HP StorageWorks NAS 8000 User’s Guide
Snapshot
A read-only copy of a file volume that contains an image of the volume as it appeared at the point
in time when the copy was taken.
Subnet Mask
A 32-bit numeric mask that blocks out all but the necessary information. This allows the IP address
to be broken into a component that identifies the subnet on which the device resides and the ID of
the device itself.
Switch
A network infrastructure component to which multiple nodes attach. Unlike hubs, switches
typically have internal bandwidth that is a multiple of link bandwidth, and the ability to rapidly
switch node connections from one to another. A typical switch can accommodate several
simultaneous full link bandwidth transmissions between different pairs of nodes.
Syslog
The main system log that contains statistics and error messages. This log resides in
/var/log/messages.
System log
A file containing statistical information and error messages.
System name
The system name uniquely identifies your NAS server. It is a text string up to 15 characters drawn
from the alphabet (A-Z), digits (0-9), and minus sign (-). Note that periods are only allowed when
they serve to delimit components of “domain style names.” No blank or space characters are
permitted as part of a name. No distinction is made between upper and lower case. However, the
name must begin with a letter and the last character must not be a minus sign. The name you use
appears on the Identity screen of the user interface and in Network Neighborhood in a Windows
networking environment.
TCP/IP
A commonly used networking protocol that allows interconnection of different network operating
systems. TCP/IP stands for Transmission Control Protocol/Internet Protocol.
Telnet
A protocol that provides console services remotely. The Telnet program runs on your computer
and connects your PC to the NAS server through the network. You can enter commands through
the Telnet program and they are executed as if you were entering them directly on the server
console.
Trap
A type of SNMP message used to signal that an event has occurred.