Encryption/Compression - HP BB118BV - StorageWorks Data Protector Express Package User Manual

This setting instructs Data Protector Express to compare every selected file stored on the media
with the original file from the PC desktop or file or application server. This default option is strongly
recommended.
This setting instructs Data Protector Express to be certain that every file backed up onto the
media is in readable condition. It does not verify that the data is correct, only that the data stored on the
media (incorrect or not) can be read. While selecting this option can save time, it is nonetheless not
recommended.
Data Protector Express can make use of both hardware and software encryption during backups. Data can
also be backed up without encrypting it. The encryption types are: Automatic, Software, or Hardware.
This setting controls how Data Protector Express encrypts the files and directories.
: This setting writes unencrypted data to the media. This has no impact on performance but leaves data
written to media available to anyone with access to the media.
When set to Automatic Data Protector Express uses Hardware encryption if available,
otherwise uses software encryption.
Uses the encryption algorithms available in Data Protector Express.
Uses the encryption algorithm available in the target backup device. This requires an
encryption capable backup device.
For more information on encryption, see Error! Reference source not found.Error! Reference source
not found.
Data Protector Express can make use of both hardware and software compression during backups. Data
can also be backed up without compressing it. Software compression types are: None, Software,
Operating system or Both. Hardware compression types are None or Compressed.
This setting controls how Data Protector Express compresses or maintains the compression of files and
directories.
When set to None, Data Protector Express writes all data to the backup media in a decompressed
format. If the file is stored on disk in a compressed format, the file will be decompressed before writing.
This option is useful if the device supports hardware data compression and the files are to be restored to a
different operating system.
When set to Software, Data Protector Express writes all data to backup media in the Data
Protector Express compression format. If the file is stored on disk in a compressed format, the file will be
decompressed before Data Protector Express re-compresses it. This option is useful if the backup device
does not support hardware data compression and the files are to be restored to a different operating
system.
When set to Operating system, Data Protector Express writes all data to backup media
in the same mode it is stored on disk. If the file is stored on disk in compressed format, Data Protector
Express will write the data in the host's compressed format. If the file is not compressed on disk, Data
Protector Express will store the file on media in a non-compressed format. This option is useful if the
hardware supports data compression and the files are to be restored to the same operating system. This
option also gives better performance.