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Multi-volume Storage Environment
RoSE_STEM can manage multi volume storage environments. These currently include the
Exabyte
EXB series of tape Robots, the StorageTek Silos and standard Stratus 3480 and DAT
stackers. These
tape management environments are ideal for use in data centres where backups are to
be performed in an
automatic fashion. RoSE_STEM will instruct the tape handling system to mount and
dismount tapes as
required.
RoSE_STEM ensures that the Stratus operating system views these tape handling systems
as standard tape
devices. Each of the above mentioned storage systems employ different techniques when
managing tape
volumes. RoSE_STEM will cater for the various techniques employed, identifying the
requirements
transparently and providing a standard interface to the tape environment.
- Rapid, automatic restoration of saved objects by name and date
- Accurate and timely location of exactly when and to which volumes, files and
directories have been
written.
- Multiple tape pools, which can be specific to single modules or global to the
whole
installation.
- Automatic allocation of free volumes from the volumes database, eliminating
costly
overwrite errors.
- Tape maintenance: cleaning cycles, even use of tapes, on site/off-site locations.
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Operator Interface
RoSE_STEM reduces the involvement of operators to the physical mounting and
dismounting of tapes.
The saving on manual maintenance of tape cycles, file recovery and operator training
can be enormous.
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- A Tape Operator facility allows the physical mounting and dismounting of tapes
to
be separated from
the function of requesting backups and other tape writes. This facility can be used
within a Data Centre
environment or by individual users.
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- A User Database is maintained allowing all these functions to be selectively
enabled or disabled for
particular users or user groups.
- A full audit trail is maintained to provide total accountability to all tape
and
tape library operations.
User Interface
RoSE_STEM provides a super-set of tape commands to make the operation of tape
functions easier and
much more reliable:
- A command subsystem enables the execution of "save", "restore", "write_tape",
"read_tape" etc within
a self-contained environment.
- Support for a Tape Job Database of often performed tape jobs enables
non-trivial
"saves" to be
executed by simple single-line commands.
- Supports multiple saves to a single volume, even multi saves from a single
command.
This is highly
desirable when using high capacity tape devices since it reduces restoration time.
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