STORE and TurboSTORE/iX Products Manual (B5151-90003)

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concurrent backup devices A set of multiple, concurrently accessible backup devices to
which you are able to store information simultaneously.
consecutive backup devices A set of multiple backup devices used for a given tapeset to
which you are able to store information sequentially.
console See system console.
current working directory The directory in which you are working and from which
relative pathnames are resolved. See also directory and relative pathname.
DAT Digital Audio Tape. A data storage media used by the HP 1300H DDS-format device.
database An integrated collection of logically related data files and the structural
information about the data.
data compression The use of data compression algorithms on the host system to reduce
the amount of data transferred to the output device.
DDS Digital Data Storage. A format for storing computer data on DAT cassettes.
device See peripheral.
device class A collection of devices that have some user-defined relation. The MPE/iX file
system supports a means of maintaining collections of devices but is cognizant of the
relation only for certain MPE device class names.
device pool A series of identical backup devices.
device type Device types are defined by a number. For example, 0 represents a
moving-head disk and 16 is the class type number assigned to line printers.
directory A special kind of file that contains entries that point to other files. It acts like a
container for files and other directories. On MPE/iX, accounts and groups are special types
of directories.
disk A circular plate of magnetically coated material used to store computer data. A disk
may be fixed, removable, hard, or flexible.
dot (.) Convention that signifies the current working directory in HFS syntax. See also
current working directory and HFS syntax.
dot-dot (..) Convention that signifies the parent directory in HFS syntax. See also current
working directory and HFS syntax.
dot-slash (./) A convention that you can use to refer to a file using HFS syntax in your
current working directory. For example, ./myfile.old refers to the file myfile.old in
your current directory.