Fujitsu Eternus DX80 S2 - Page 49

Chapter 3 Setup
3.4 Data Encryption
ETERNUS DX80 S2/DX90 S2 Disk storage system User’s Guide -Operation-
Copyright 2013 FUJITSU LIMITED P3AM-4842-12ENZ0
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■ Volume conversion encryption function
For details on the data encryption procedure, refer to "ETERNUS Web GUI User’s Guide" or "ETERNUS CLI User’s
Guide".
• The encryption method for encrypted volumes cannot be changed. Encrypted volumes cannot be changed
to unencrypted volumes.
To change the encryption method or cancel the encryption for a volume, back up the data in the encrypted
volume, delete the encrypted volume, and restore the backed up data.
• It is recommended that the copy source volume and the copy destination volume use the same encryption
method for remote copy between encrypted volumes.
• When copying encrypted volumes (using Advanced Copy or copy operations via server), transfer
performance may not be as good as when copying unencrypted volumes.
• SDPVs cannot be encrypted after they are created. To create an encrypted SDPV, set encryption when
creating a volume.
• Thin Provisioning Volumes (TPVs) cannot be encrypted individually. Rather, the encryption status of TPVs
depends on that of the TPP to which the TPVs belong.
• Flexible Tier Volumes (FTVs) cannot be encrypted individually. Rather, the encryption status of TPVs
depends on that of the Flexible Tier Pool (FTRP) to which the FTVs belong.