Software Strength - HP BB118BV - StorageWorks Data Protector Express Package User's Manual & Technical Reference

Automatic This selection will use hardware encryption, if it is available from the device; otherwise,
software encryption will be used
Software Software encryption will be used. When Software is selected, the user can choose the
strength of software encryption
Hardware Hardware encryption will be used, if the device supports it. If it does not support encryption
and this option is selected, the user will be prompted with an alert stating that the device cannot be used
since it does not support hardware encryption.
NOTE:
Some variants of Data Protector Express have reduced encryption capabilities. In this case, the encryption
features that are not available will be grayed out.

Software Strength

medium and high. Low is the easiest method to decipher by outside methods, High is the hardest method
to decipher by outside methods. As you progress from low to high, the encryption algorithm requires
more CPU computations for each block of data to be encrypted, which may slow down the data stream
to the device and will increase CPU loading on the Media Server.
Encryption and Compression
be able to select Software compression.
If Hardware is selected, we recommend that Enable hardware compression is also selected. Hardware
encryption and hardware compression can be used on devices, such as the HP LTO-4 tape drive without
any loss of backup speed.
Media Properties
On the Media Properties page, the encrypted media is depicted with the lock on it. The Platinum colored
lock indicates hardware, whereas the gold lock indicates software encryption. The Media details window
shows the type of encryption used.
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Backup Jobs
Options for the software encryption strength are listed below as three selections, low,
Figure 77 Software strength
Software encryption disables hardware compression, although you will still