IBM DDS Gen 5, Руководство пользователя

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Appendix A. Specifications
This appendix provides specifications for the DDS Gen 5 Tape Drive.
Data capacities
This table lists the data capacities for the cartridges that can be used in the IBM
DDS Gen 5 drive.
Cartridge type Tape length Capacity
a
, native
Capacity
a
,
compressed
b
DAT72 170 meters 36 GB
c
72 GB
DDS/4 150 meters 20 GB 40 GB
DDS/3 125 meters 12 GB 24 GB
a
Maximum capacity: assumes the host computer keeps the drive streaming.
b
Assumes a 2:1 compression ratio. Actual compressed capacity varies depending on the
type of data being recorded. The tape drive uses the ALDC (Adaptive Lossless Data
Compression) algorithm and integrated circuit chip. The ALDC algorithm is compliant
with the European Computer Manufacturers Association (ECMA) standard. Data
compression is controlled by the software application.
c
One gigabyte equals 1,000,000,000 bytes.
Size and weight
This table shows the dimensions and width for the tape drive. The tape drive is a
5.25-inch form factor drive for integration into an enclosure.
Specification Tape drive
Height 41.2 mm (1.6 in)
Depth 146.0 mm (5.7 in)
Width 101.6 mm (4.0 in)
Weight 0.62 kg (1.4 lbs)
© Copyright IBM Corp. 2003
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