Veritas Storage Foundation Intelligent Storage Provisioning 5.0.1 Administrators Guide, HP-UX 11i v3, First Edition, November 2009

For example, the following command returns the maximum possible size of a

mirrored volume with three mirrors that can be created from all the available free

storage:

# vxassist -g mydg -P mypool maxsize layout=mirror nmir=3

The following command is equivalent if the DataMirroring capability is specified:

# vxassist -g mydg -P mypool maxsize \

capability=’DataMirroring(nmirs=3)’

The following example checks for the maximum volume size that can be created

using prefabricated mirrors of a specified vendor type:

# vxassist -g peakdg -P peakpool maxsize \

volume_template=PrefabricatedDataMirroring \

rules=’confineto "VendorName"="ACME"’

The maximum size of a VxVM volume that you can create is 256 TB.

Creating volumes

To create a volume with a specified length, specify the make keyword to vxassist

as shown in the following command:

# vxassist [options] make volume length \

[storage_specification] [attribute=value ...]

It is possible to specify a combination of capabilities, templates and rules to this

command.

The following definitions are relevant to creating volumes:

■ A rule specifies a criterion for choosing and allocating storage.

■ A template is a meaningful collection of rules that define a capability.

■ A capability is a high-level description of what a volume can do.

The properties of the volume that is created are further determined by any

parameters and other attributes that you specify.

Rules, capabilities and templates may be combined in the following ways:

■ If you specify rules along with capabilities, ISP creates volumes that comply

to the rules that are defined in the capabilities, and also to those rules that

you specify as arguments to vxassist.

Creating application volumes

Creating volumes