If you have upgraded a disk in a volume shadowing environment,
you must now re-formthe shadow set. If you want to form a shadow
set for a newly installed system disk, you can do this now or later.
To do so requires that the VOLSHAD license has been entered and
loaded. In addition, several system parameters must be set as explained
in
Set System Parameters for Volume Shadowing (New Installations Only; Optional).
Forming the shadow set with the newly installed or upgraded
disk as the master will cause the other disks in the shadow set
to be updated with a copy of the disk. (In a single-member shadow
set, although no other disks exist to be updated, the shadow set
can be used to facilitate replacement of a failed drive.)
After forming the shadow set, you can then dismount one of
the shadow set members and keep it as a backup. After you perform
the steps recommended in this chapter, you can place another volume
into the shadow set instead of doing the final backup.
Form the shadow set as follows:
Enter the SHOW
DEVICE D command to display a list of disks available on your system.
For example:
$ SHOW DEVICE DDevice Device Error Volume Free Trans Mnt
Name Status Count Label Blocks Count Cnt
$11$DKB100: (NODE1) Online 0
$11$DKB200: (NODE1) Mounted 0 ALPHA070 918150 1 31
Enter a command in the following format: MOUNT/CONFIRM/SYSTEM DSAn: /SHADOW=(upgraded-disk:,new-member:) volume-label Note the following conventions:
DSAn: is the
virtual unit name of the shadow set, where n is a unique number from 0 to 999.
upgraded-disk: is the name
of the shadowed system disk you just upgraded.
new-member: is the name of
the disk you want to add as a member of the shadow set.
volume-label is the volume
label of the shadowed system disk you just upgraded.
When you form the shadow set, the contents of the new
member are replaced by the contents of the disk you upgraded. Specifying
the /CONFIRM qualifier reminds you of this fact, confirming that
you are specifying the correct name of a disk that either is blank
or contains files you no longer need.
$ MOUNT/CONFIRM/SYSTEM DSA54: /SHADOW=($11$DKB200:,$11$DKB100:) ALPHA082%MOUNT-F-SHDWCOPYREQ, shadow copy required
Virtual Unit - DSA54 Volume label ALPHA082
Member Volume label Owner UIC
$11$DKB100: (NODE1) SCRATCH [100,100]
Allow FULL shadow copy on the above member(s)? [N]: YES
Before continuing with the next step in this chapter,
dismount one of the shadowed set members to use as a backup. Normally,
this should be the unit you just added to the upgraded volume when
you formed the shadow set (in the preceding example, it would be
$11$DKB100:.
HP OpenVMS Version 8.2 Upgrade and Installation... 
After Installing or Upgrading the OpenVMS Operating... 
