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Tandberg Data Specifications
4 Tandberg LTO HH Installation and User Manual
2.5 Heat Dissipation
Tandberg LTO as standalone: LTO-1/LTO-2 LTO-3
Operating: 18 W 13 W
Sleep mode with cartridge inserted: 9 W 6 W
2.6 Data Compression
Data Compression is a way to increase capacity on a storage device. Compression ratios are normally
specified to be 2:1, meaning that it is possible to store twice as much data on the tape as without data
compression. However, the compression rate is depending on the type of data, e.g. ordinary text files
can be compressed in a much higher rate than program- and picture files.
There are two ways to compress data, hardware compression and software compression. Hardware
compression means that the data compression is done by the electronics in the storage device.
Software compression means that an application program in the host computer is compressing the
data before it is sent to the storage device. Hardware compression is much more efficient, and works
much faster than software compression.
The Tandberg LTO HH tape drives uses SLDC hardware compression to compress data. This feature
is enabled per default but the user may turn off data compression through the application software.
Note:
If the data are compressed by software in the host computer, and then sent to a device that does
hardware compression, the data have a tendency to expand instead of being compressed.
Be sure to turn the software data compression off if using the Tandberg LTO HH - which has
embedded hardware compression.