HP 3PAR Application Software Suite for VMware - Manual (Page 56)

NOTE: Only templates configured with at least TPVV or CPVV type, size, and user CPG
from Storage Systems associated with the selected ESX(i) host are displayed.
5. Select an appropriate template from the list based on the summary of details, then click Next.
You are then asked to provide the virtual volume parameters for the virtual volume being
provisioned.
Figure 44 Virtual Volume Provisioning Parameters
6. Fill in the following parameters and click Next when done.
•
Number of virtual volumes: - Number of virtual volumes to create (1 – 99). The default
is 1.
•
Virtual volume name prefix - Name for the virtual volume (1 – 31 characters for single
volume creations or 1– 26 characters for multiple volume creations). If the number of
virtual volumes to be created is set to 1, the specified name is sufficient for creating the
virtual volume. When creating multiple virtual volumes, a decimal number is automatically
appended to the name prefix for each virtual volume that is created up to the maximum
limit (.0 - .9999).
NOTE: When choosing a name for creating virtual volumes, you must consider the
following:
◦ If the number of virtual volume count = 1, the virtual volume name is set to 31 and
the Datastore name is set to 42.
◦ If number of the virtual volume count > 1, the virtual volume name prefix is set to 26
and the Datastore name prefix is set to 31.
•
Size (512 MB – 16 TB) - Size for the virtual volume. For VMFS-3, the VV size range is 512
MB to 2 TB, For VMFS-5, the VV size range is from 512 MB to 16 TB.
When specifying the size for a virtual volume, 256 MB is reserved for each node.
Depending on the cluster type, the minimum virtual volume size is calculated as 256 MB
times the number of nodes.
In a two node system, 512 MB is reserved when a TPVV is created. If an 80% user limit
is set for a 512 MB TPVV, only 410 MB of space can be allocated. However 512 MB
is the least amount required so the creation of the virtual volume fails. In other words, If
the allocation limit is set, the space after the % needs to be at least 512 MB in a 2 node
cluster.
56 Logging In and Working with Virtual Volumes