Thin Provisioning Setup; Data Encryption - Fujitsu Eternus DX80 S2 User Manual

Chapter 3 Setup

3.2 Data Encryption

3.1.2

Thin Provisioning Setup

For details on the setup and operation management of the Thin Provisioning function, refer to
"ETERNUS Web GUI User's Guide" or "ETERNUS CLI User's Guide".
For details on operation management when using ETERNUS SF Storage Cruiser, refer to
"ETERNUS SF Storage Cruiser User's Guide".
3.2 Data Encryption
Encrypting data as it is being written to the drive prevents information leakage caused by fraudu-
lent decoding.
Even if a drive is removed and stolen by malicious third parties, data cannot be decoded.
The encryption function only encrypts the data stored on the drives, so server access results in
the transmission of plain text. Therefore, this function is effective against leakage of data being
transferred via sneaker net, but has no effect on data leakage via server access.
This section describes the restrictions and notes on encrypting data.
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 can-
not 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.
ETERNUS DX80 S2/DX90 S2 Disk storage system User's Guide -Operation-
• When the Thin Provisioning Feature License is purchased at the same
time as the ETERNUS DX Disk storage system, the license is registered
as a factory setting.
Attach the license label plate provided with the Thin Provisioning Feature
License to the rack rail near the ETERNUS DX Disk storage system
which holds its license, for future reference.
• Check whether the license has already been registered using the pro-
vided license label plate or the ETERNUS Web GUI screen. In the fol-
lowing conditions, the license is registered.
- The license key (barcode and 16-character alphanumerical string) is
printed on the "LicenseKey" field of the license label plate.
- In the Thin Provisioning [License] screen of ETERNUS Web GUI,
"Registered" is shown in "Status".
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Copyright 2011 FUJITSU LIMITED P3AM-4842-01ENZ0