HP 3PAR OpenVMS Implementation Guide (763874-002)

Restrictions on volume size and number
While creating Virtual Volumes and VLUNs (Virtual LUNs), adhere to the guidelines listed in the
HP 3PAR OS CLI Administrator’s Manual and also adhere to the following cautions and guidelines:
• This configuration supports sparse Virtual Volumes (implying that LUNs may be skipped).
Virtual Volumes can also be exported in a non-ascending order (for example 0, 5, 7, 3).
• The HP 3PAR StoreServ Storage system supports exportation of VLUNs with Virtual Volumes
in the range 0 to 32767.
NOTE: HP 3PAR 3.1.3 supports UDIDs in the range 0 to 63999. However, the OVMS OS
recognizes UDIDs only up to 32767.
• The maximum virtual volume size that can be exported to an OpenVMS 8.4 OS is 2,047 GB
and 1023 GB for OpenVMS 8.3 1H1 OS.
Figure 15 Create virtual volume
1. Select the Show Advanced options panel(s) at the bottom of the screen.
2. Clear Auto to manually create a virtual volume ID.
3. Select the Virtual Volume to be exported, where you need to assign VIRTUAL VOLUME.
4. Clear Auto, to assign a virtual volume. Otherwise a UDID is set automatically.
5. The limit for assigning a UDID for OVMS OS is 0 - 31999.
Creating Virtual Volumes using GUI 19