User`s guide

Tape Cartridge Densities and Compression
Changing the Density and Compression for Writing
5-3
HP SureStore DLT 40
HP SureStore DLT 70
HP SureStore DLT 80
*compressed capacities assume a 2:1 compression ratio
Note You can appear to set any density with any tape cartridge on the front
panel. However, if the combination of density and tape cartridge is
invalid, as shown in the tables above, the density will switch back to the
default density and compression settings as soon as the drive starts
writing.
The drive cannot provide compression at 2.6 GB or 6.0 GB densities. If you
need to use compression at these densities, use a backup application that
provides software compression. This compresses the data before sending it
Density Setting
2.6 GB 6.0 GB
10.0 GB 20.0 GB
Tape Cartridge Native Compressed Native Compressed
Type III 2.6 GB 6.0 GB 10.0 GB
20 GB* No No
DLTtape IIIxt No No 15.0 GB
30 GB* No No
DLTtape IV No No No No 20.0 GB
40 GB*
Density Setting
2.6 GB 6.0 GB
10.0/15.0 GB 20.0 GB 35.0 GB
Tape Native Compressed Native Compressed Native Compressed
Type III 2.6 GB 6.0 GB 10.0 GB
20 GB* No No No No
DLTtape IIIxt No No 15.0 GB
30 GB* No No No No
DLTtape IV No No No No 20.0 GB 40 GB* 35.0 GB
70 GB*
Density Setting
10.0/15.0 GB 20.0 GB 35.0 GB 40.0 GB
Tape Native Compress’ Native Compress’ Native Compress’ Native Compress’
Type III 10.0 GB
20 GB*NoNoNoNoNoNo
DLTtape IIIxt 15.0 GB
30 GB*NoNoNoNoNoNo
DLTtape IV No No 20.0 GB 40 GB* 35.0 GB 70 GB* 40.0 GB
80 GB*
dlt.book Page 3 Monday, February 12, 2001 5:42 PM