4. Using E05 format
5. Using J1A format
The 3592 J1A Tape Drive offers the following features to help improve performance,
capacity, and availability:
• N+1 power supplies when installed in the 3584 frame
• Large 134.22 MB (128 MiB) internal data buffer
• Digital speed matching to adjust the drive's native data rate to the net host data rate
(after data compressibility has been factored out) throughput performance
• Channel calibration which is designed to allow for customization of each read/write
data channel for optimum performance
• High resolution tape directory plus enhanced search speed to improve nominal and
average access times
• Streaming Lossless Data Compression (SLDC) algorithm which is designed to offer an
improvement over previous IBM lossless compression algorithms
The TS1120 and TS1130 tape drives offer all of the preceding features of the 3592 J1A tape
drive, in addition to the following features:
Media reuse
The TS1130 tape drive, TS1120 tape drive, and the 3592 J1A tape drive can reuse
different types of tape and multiple densities (logical formats) across various drive
generations. Certain models can only support a subset of densities (such as the 3592
J1A tape drive, which can only read and write at a single density), while others (such
as the TS1120 tape drive and TS1130 tape drive) can read and write at multiple
densities.
The TS1120 tape drive reads and writes at 512 tracks and 8 channels on the JA, JR,
JJ, and JW media types. The TS1130 tape drive reads, but does not write, this
format. Both TS1120 and TS1130 tape drives read and write JB and JX media types
at a density of 896 tracks and 16 channels. 3592 J1A emulation (TS1120 only) is not
supported on the JB and JX media. The TS1130 tape drive also reads and writes a
third format at a density of 1152 tracks and 16 channels. These logical formats can
be divided into multiple sub-format options, such as segmentation and capacity
scaling.
Speed matching
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