AMASS Overview

S

scattered writes

If multiple writes occur to a single volume group, AMASS uses more than one drive to simultaneously write to the volume group. This increases throughput.

SCSI Fast/Wide

Small Computer System Interface. An intelligent bus-level device interface. Refers to a combination of Fast transfer rate (10 MB per second) with a two-byte wide (68 pins) connector, which results in 20 MB/sec data transfer rate.

server

Programs running on a network server provide computing or data services to a client. Part of a client/server architecture.

SLD

Service Locator Daemon component of DataMgr. The SLD maps the name of a DataMgr service (BFS, SSD) to the archiving service (AMASS).

slot

Referred to as a bin in some libraries. The physical home storage slot where a single piece of media resides. In standalone drives, the slot is the same as the drive, but in all other libraries that is not true.

SMP

Symmetric Multiprocessing. Making efficient use of multiple processors within a computer.

space pool

A special volume group that contains formatted volumes. The volumes in the space pool are used by numeric volume groups that have run out of space. When a volume group runs out of space, AMASS automatically takes a volume from the space pool and reassigns it to the out-of-space volume group.

SSD

Storage Server Daemon component of DataMgr. The SSD provides an RPC interface from DataMgr clients to

AMASS.

standalone drives

A storage device for data containing a single drive. Usually, media is loaded manually in a standalone drive. See also jukebox and library.

Storage Area Network

A storage area network (SAN) is a dedicated high-speed Fibre channel topology. The application servers are attached to the storage devices for specific tasks.

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Glossary

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