Technical data

Managing Storage Media
9.6 Setting Up Disk Volume Sets
volumes are unusable as a volume set because the directory structures
are not properly bound.
9.6.5 Adding Volumes to an Existing Disk Volume Set
You can add volumes to an existing volume set at any time. The maximum
number of volumes in a volume set is 255.
This section contains examples that show how to add volumes to an existing
volume set.
Examples
1.
$ INITIALIZE DUA4: PAYVOL4
$ MOUNT/BIND=MASTER_PAY DUA4: PAYVOL4
In this example, the volume set named MASTER_PAY is on line and mounted
and has volumes named PAYVOL1, PAYVOL2, and PAYVOL3.
The MOUNT/BIND command binds the volume PAYVOL4 with the existing
volume set and makes the volume ready and available for use. Note that, if
the volume set MASTER_PAY is mounted with the /SYSTEM, /GROUP, or
/SHARE qualifier, the MOUNT/BIND command that adds a volume to the set
must also specify the appropriate qualifier.
When you add a volume to an existing set, the only volume in the set that you
must mount is the root volume, relative volume 1 (in this example, DUA4:).
Mounting any of the other volumes is not necessary.
2.
$ INITIALIZE DUA4: PAYVOL4
$ MOUNT/BIND=MASTER_PAY DUA1:, DUA2:, DUA3:, DUA4: -
_$ PAYVOL1, PAYVOL2, PAYVOL3, PAYVOL4/SYSTEM
In this example, a set named MASTER_PAY already exists, with volumes
named PAYVOL1, PAYVOL2, and PAYVOL3.
You can add a volume to a set at the same time that you mount the volume
set, as this example shows. Note that the first device/volume pair listed in the
MOUNT/BIND command is the root volume of the set, the DUA1: volume.
When you add a volume to a set while mounting the set, you must list the
root volume first.
9.7 Mounting ISO 9660 Volume Sets and Groups
To access an ISO 9660-formatted CD–ROM, you can mount disk volumes in two
ways:
• Directly, using the Mount utility (MOUNT)
• Indirectly, using the DCL command MOUNT
The Mount utility (MOUNT) builds the I/O database structures that are needed
to access ISO 9660 directories and files. MOUNT also verifies the presence of an
appropriate ACP to perform $QIO functions specific to ISO 9660. Currently, you
cannot mount ISO 9660 media as a system disk. Refer to the OpenVMS System
Management Utilities Reference Manual for details.
Managing Storage Media 9–47