Brocade Fabric OS Encryption Administrator’s Guide Supporting NetApp Lifetime Key Manager (LKM) and KeySecure Storage Secure Key Manager (SSKM) Environments (Supporting Fabric OS v7.2.0) - Manual (Page 109)

Fabric OS Encryption Administrator’s Guide (LKM/SSKM) 91
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Thin provisioned LUNs
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• Re-Key State: Options are:
- Re-Key Setup
- LUN Prep
- LUN Clean-up
- Key Update
- Read Phase
- Write Phase
- HA Sync Phase
• Re-Key Role: Options are:
- Primary/Active
- Backup/Active
• Block Size: The block size used on the LUN.
• Container Name: The CryptoTarget container name.
• Host Port WWN: The WWN of the host port that is being used for the write operation.
• Current LBA: The Logical Block Address (LBA) of the block that is currently being written.
• Number of Blocks: The number of blocks written.
• Thin Provision LUN: Identifies if the new LUN is a thin provisioned LUN. Options are:
- Yes: Thin provision support is limited to Brocade-tested storage arrays. The thin
provisioned LUN status will be displayed as Yes for supported storage arrays only.
- No: Shown as No if the LUN is not a thin provisioned LUN.
- Unknown: Shown if the LUN status cannot be determined.
- Not Applicable: Applies to Brocade Encryption Switches that are running a Fabric OS
version earlier than v7.1.0.
2. Click Refresh periodically to update the display.
Thin provisioned LUNs
With the introduction of Fabric OS 7.1.0, the Brocade Encryption Switch can discover if a disk LUN
is a thin provisioned LUN. Support for a thin provisioned LUN is limited to disk containers only. Thin
provisioned LUNs can be created with the new LUN option.
NOTE
Currently, thin provisioned LUN support is limited to Brocade-tested storage arrays running specific
supported firmware releases. The thin provisioned LUN status will be displayed as Yes for supported
storage arrays only.
Thin provisioned LUNs rely on on-demand allocation of blocks of data, instead of the traditional
method of allocating all blocks up front. If a thin provisioned LUN status is shown as Yes, then
first-time encryption and rekey are done on the allocated blocks only, which results in the
provisioned region of the LUN to remain the same after the rekey is performed.
Thin provisioned LUN support requires no action by the user. The Brocade Encryption Switch can
automatically detect if a LUN is a thin provisioned LUN.