When are data encryption license keys needed
After you have completed the encryption environmental settings, you will need data encryption license keys to work on the following operations:
Increasing drives
A Free key is needed for each drive to allocate a DEK key.
Replacing drives
A Free key is needed for each drive to change a DEK key.
Increasing or replacing disk boards.
3 Free keys are needed for each disk board to create 2 CEK keys and a key to register CEK keys.
Updating CEK keys
2 Free keys for each disk board (4 free keys per storage system) are needed to change CEK keys.
If a problem occurs in the middle of an operation, extra keys might be needed to recover from it.