Home > Data Protection > PowerProtect DD Series Appliances > White Papers > PowerProtect DD Series Appliances: Encryption Software > Changing the encryption algorithm
If necessary, you can reset the encryption algorithm. Also, you can select options to encrypt new and existing data, or you can encrypt only new data.
Follow this procedure to change the encryption algorithm:
The Change Algorithm window displays the supported encryption algorithms:
The AES 256-bit GCM is the most secure algorithm, but it is slower than CBC mode.
Note: To reset the algorithm to the default AES 256-bit (CBC), click Reset to default.
Existing data will be encrypted during the first cleaning cycle after the file system is restarted.
Note: Encryption of existing data can take longer than a standard file-system-clean operation.
The status is displayed.
Note: Applications may experience an interruption while the file system is restarted.