With DP907 (DP9.06_109) on W2K12 or W2k8, copy failed on encrypted tapes/drives:
[Critical] From: BMA@mediaserver.xxx.yyy "drive" Time: 18/08/2016 1:55:25 PM
[90:6111] Error retrieving encryption key.
NOTE:
Backup/restore are working fine.
Results of "omnidbcheck -keystore" shows no error.
Solution
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Fixed by DP0907_B109_QCCR2A69192_HF1_WIN
NOTE: CSM and BMA must be both applied in DP env to work correctly.
Please contact HP Support for getting the fix.