For convenience, you can define alias names for existing storage-specification disk classes. Typically, an alias is a shorter or more user-friendly name. You can use the alias instead of its corresponding disk class, to specify vxassist allocation constraints. Define the alias names in rule files.

For example, to define "atyp" as an alias for the base disk class "arraytype", include the following statement in a rule file.

class alias atyp=arraytype

When the above rule file is used, you can specify the alias "atyp" for allocation. For example, the following constraint specification allocates storage from A/A arrays for the volume creation.

# vxassist -g dgname make volname volsize use=atyp:A/A