Datasheet

DLT Tape Interchange Information
IBM 7205-311 35GB
The following is a chart that shows the interchange using the IBM 7205-311 tape drive.
Notes:
z The 7205 Tape drive only supports the data densities listed in the table. Supported data cartridges written in other
densities will not be recognized by the drive and these cartridges will not be readable by this drive. The 7205 will treat
these cartridges as blank cartridges.
z If a DLT IV data cartridge written in 40GB mode is attempted to be read on the 35GB drive the tape will appear to be
a blank data cartridge. Interchange of data between the 35GB drive and the 40GB drive can only be done on supported
data cartridges with a density setting common between the drives.
z The drive does an automatic determination of the density setting when reading a data cartridge, but for write
operations you must set a writing density that matches the data cartridge you are using.
If an unsupported write density is requested, the density will default to the highest supported density for the currently
loaded data cartridge.
z * Compression will depend upon the type of data. A compression ratio of 2:1 is assumed for this compression
capacity.
z DLTtapeIII, DLTtapeIIIxt, and DLTtapeIV are trademarks of Quantum Corporation.
IBM 7205-440 40GB
The following is a chart that shows the interchange using the IBM 7205-440 tape drive.
Notes:
z The 7205 Tape drive only supports the data densities listed in the table. Supported data cartridges written in other
densities will not be recognized by the drive and these cartridges will not be readable by this drive. The 7205 will treat
these cartridges as blank cartridges.
z The drive does an automatic determination of the density setting when reading a data cartridge, but for write
operations you must set a writing density that matches the data cartridge you are using.
If an unsupported write density is requested, the density will default to the highest supported density for the currently
loaded data cartridge.
z * Compression will depend upon the type of data. A compression ratio of 2:1 is assumed for this compression
capacity.
z DLTtapeIII, DLTtapeIIIxt, and DLTtapeIV are trademarks of Quantum Corporation.
Supported Cartridge Density Compressed Data Capacity Smit Density
Setting
DLTtapeIII 2.6GB
6GB
10GB
2.6GB (No Compression)
6GB (No Compression)
20GB (Default for drive)
23
24
25
DLTtapeIIIxt 15GB 30GB (Default for drive) 25
DLTtapeIV 20GB
35GB
40GB
70GB (Default for drive)
26
27
Supported Cartridge Density Compressed Data Capacity Smit Density
Setting
DLTtapeIII 10GB 20GB 25
DLTtapeIIIxt 15GB 30GB 25
DLTtapeIV 20GB
35GB
40GB
40GB
70GB
80GB
26
27
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