device type
A category of storage device. Each device class is categorized with one of the
supported device types, for example, DISK or CARTRIDGE.
direct access storage device (DASD)
A device in which access time is effectively independent of the location of the data.
disaster recovery
Recovery from catastrophic interruptions of computer systems, such as loss of the
system location because of natural events. Backup data is kept offsite to protect
against such catastrophes.
Disaster Recovery Manager
See Tivoli Disaster Recovery Manager.
disaster recovery plan
A document that contains information about how to recover computer systems if a
disaster occurs. The Tivoli Disaster Recovery Manager (DRM) product allows you
to create the plan for a TSM server. The plan is a file that contains information
about the software and hardware used by the TSM server, and the location of
recovery media.
DISK
A device class that is defined by TSM at installation. It is used to categorize disk
drives, such as internal disk drives or 3390 DASD.
disk operating system (DOS)
An operating system used in IBM PC, PS/2, and compatible computers.
Distributed Data Management (DDM)
A feature of the System Support Program Product that allows an application
program (client) to use server program functions to work on files that reside in a
remote system.
DLL
Dynamic link library.
DLT
Digital linear tape.
domain
See policy domain or client domain.
DOS
Disk operating system.
1420
Version 3 Release 7