SANRAD V-Switch manual Creating a Transparent Volume, Trans1

Creating a Transparent Volume

Transparent volumes cannot be used in further volume hierarchies.

Tape devices must be virtualized as transparent volumes.

You can take a physical disk and its existing configured storage data and convert it to a directly accessible, or transparent, virtual volume using the CLI command volume create transparent. A transparent volume is ready for direct host exposure. Please refer to “Volume Exposure & Security,” page 107.

Certain vendor storage devices have vendor-specific SCSI commands. To support these SCSI commands, you can convert these storage devices and their contained data to transparent volumes.

This is useful if you have a functioning and fully configured RAID module that you want to use ’as is’. All RAID configurations will be maintained in the transparent volume.

volume create transparent

You need to define two parameters to create a transparent volume:

SWITCH	PARAMETER	DEFINITION	STATUS	EXAMPLE
–vol	VOLUME ALIAS	USER-ASSIGNED	OPTIONAL	Trans1
		ALIAS FOR THE	DEFAULT:
		VOLUME	STORAGE ALIAS
-d	DISK ALIAS	ALIAS GIVEN TO	MANDATORY	Disk1
		THE DISK DURING
		DISK AUTO-
		DISCOVERY

If you are working in

aV-Switch cluster, this volume must be configured on both V-Switches.

Example:

In Figure 36, page 89, the logical unit, LUN0 on Disk 1, is converted directly to a virtual transparent volume, Transparent 1. This RAID device has only one LUN. For each LUN configured on a RAID device, the V- Switch registers a disk. Therefore, a RAID device with five LUNs will appear to the V-Switch as five disks.

volume create transparent –vol Trans1 –d Disk1

88 SANRAD V-Switch User Manual