Thin Provisioned Luns; Viewing Time Left For Auto Rekey - Brocade Communications Systems StoreFabric SN6500B Administrator's Manual

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.
NOTE:
•
•
•
•

Viewing time left for auto rekey

You can view the time remaining until auto rekey is no longer active for a disk LUN. The information
is expressed as the difference between the next rekey date and the current date and time, and is
measured in days, hours, and minutes.
Although you cannot make changes directly to the table, you can modify the time left using CLI. For
more information, see the administrator's guide supporting your key vault management system.
To view the time left for auto rekey, follow these steps:
1. Select Configure > Encryption from the menu task bar to display the Encryption Center
2. Select a group, switch, or engine from the Encryption Center Devices table for which to view the
Fabric OS Encryption Administrator's Guide (SKM/ESKM)
53-1002721-01
If a LUN is a thin provisioned LUN, LUN status is shown as 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.)
If a LUN is not a thin provisioned LUN or if thin provisioning is not supported with the LUN, LUN
status is shown as No. (This can be a result of the array not supporting thin provisioning, or the
Brocade Encryption Switch/blade does not support the thin provisioning features of the array.
Refer to the Fabric OS release notes for supported arrays.)
If LUN status cannot be determined, LUN status is shown as Unknown.
If you are running a Fabric OS version earlier than v7.1.0, LUN status is shown as Not
Applicable.
dialog box. (Refer to Figure 1
auto re-key information, then select Group/Switch/Engine > Targets from the menu task bar.
on page 14.)

Thin provisioned LUNs

2
107