Exporting Virtual Volumes; Vlun Templates And Active Vluns - HP 3PAR StoreServ 7200 2-node Manual

12 Exporting Virtual Volumes

Virtual volumes are the only data layer you can make visible to hosts. In order to make virtual
volumes visible to hosts, you must export (present) the virtual volume to the host.
The export process creates an association between the volume and a logical unit number (LUN).
You configure the characteristics of this association when you create the Virtual Volume-LUN pairing
(VLUN).
To export virtual volumes, use the HP 3PAR Management Console. For more information, see the
HP 3PAR Management Console Online Help.
For the maximum number of VLUNs supported for each host with your specific system configuration,
go to the Single Point of Connectivity Knowledge (SPOCK) website
spock.

VLUN Templates and Active VLUNs

When you create VLUNs, the system produces both
and active VLUNs that the host sees as a LUN or attached disk device expressed as a logical unit
number.
A VLUN template is an export rule that sets up an association between a virtual volume and a
LUN-host, LUN-port, or LUN-host-port combination that governs how the host can access the virtual
volume. A VLUN template can use one of the following export rules:
A host-sees VLUN template
Host set allows any host that is a member of the specified host set to see a volume.
A port-presents VLUN template
A matched-set VLUN template
volume.
When you export volumes, and the virtual volumes and host paths meet the parameters set in the
specified VLUN template, the system creates active VLUNs. The host system uses those active VLUNs
to access the virtual volumes in order to perform read/write operations.
46 Exporting Virtual Volumes
VLUN
allows only a specified host to see a volume.
allows any host on a specified port to see the volume.
allows only a specified host on a specified port to see the
http://www.hp.com/storage/
templates that establish export rules,