Recommended Settings; Recorded Objects - Tandberg Data SLR7-140 PROGRAMMER Manual

Tandberg Data
Drive Medium
SLR50 SLRtape50
SLR32
SLRtape24
SLR5
DC9250
SLR7 SLRtape7
SLR5
Table 2-6: Forced Streaming and AVC On Different Medium Types
2.9.4.
SLR140, SLR100, SLR75, SLR60 and SLR7 Drives
SLR50 Drives
The optimal Forced Streaming value is dependent on both
host behavior, host transfer rate and compression ratio
on data actually written. Fine-tuning should be done on
" real life systems" with " real life data" .

2.10. Recorded Objects

The recording formats [9] - [14] specify that recorded
elements
included in the recorded information to help determining
the write sequence and also to help detecting position-
ing
whole volume.
The
only. This means that a possible logical block number
maintained by the host system will not be the same as
the
because logical blocks may span over multiple physical
blocks.
The physical identifiers are normally not visible to the
host system. There are, however, some exceptions. In the
Tandberg SLR Product Line Tape Drives, the READ POSITION
and
identifiers to/from the host system. The host system is,
however, not expected to process this data in any way.
The identifiers transferred from the Drive by the READ
POSITION
transferred unmodified back to the Drive at some future
time by the LOCATE command.
2-35
Forced Streaming
Available
Available
Available

Recommended Settings

Forced Streaming = 0
AVC = on
Forced Streaming = 1024
AVC = on
(blocks and
errors. These identifiers
identifiers are
physical identifier
LOCATE commands
command should
Tandberg SLR Product Line SCSI Functional Specifications
Ignored
Ignored
Ignored
Ignored
tapemarks)
are
associated with
of the same
may transfer
just be
About Tape Streamers
AVC
Available (2 speeds)
Available (2 speeds)
Available (2 speeds)
Ignored
Ignored
Ignored
Ignored
have identifiers
unique within the
physical blocks
logical block
physical block
stored and then