HP 3000 Manuals

Volume Management

What Is Volume Management? 

Volume management is a facility of MPE used to manage disk space by
creating volume sets and volume classes.

The basic units of volume management are listed below:

Volume                A volume is a disk pack.

Volume sets           A volume set is a set of disks.

Volume classes        A volume class is a subset of the volumes in a
                      volume set.

Volumes 

A volume is a disk pack.  A disk pack can be removable or nonremovable.
For example, in Figure 1-1 , six disks are shown connected to a
system.  Every disk connected to a system is a volume.


          Figure 1-1.  Volumes 

Volume Sets 

A volume set is a group of volumes containing one master volume and
optional member volumes.  There are two types of volume sets available on
the system, one system volume set that is initialized when the system is
installed and nonsystem volume sets that you create.  You can create
nonsystem volume sets and add volumes to volume sets while the system is
running.


          Figure 1-2.  Volume Sets 

Volume Classes 

A volume class is a subset of the volumes within one volume set.  Volumes
can belong to one volume class or several.  Volume classes can be added
to the system while the system is running.


          Figure 1-3.  Volume Classes 

MPE/iX 5.0 Documentation