Hello,
There are two types of compression method , Software and Hardware that are
available with Backup Exec.
To use Hardware compression, drives should support it.The software
compression is performed by Backup Exec application.
As you are using Hardware compression option while taking backup, please
verify that your drive supports the hardware compression.
You are using the option, Hardware .This
option uses hardware data compression (if the storage device supports it).
If the drive does not feature hardware data compression, software
compression is used. So in this case compression is enabled and you can
have 80 GB compressed capacity on the media.But, it should be noted that
twice the native capacity of a media is rarely, if ever, achieved.
For more information, refer to the following technote :
http://seer.support.veritas.com/docs/199542.htm
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