[comp.os.vms] Disk naming schemes.

MACALLSTR@vax1.physics.oxford.ac.UK (05/17/88)

DEC's restriction of 12 character labels for disk packs is very restrictive
 in a cluster environment where a consistent naming scheme is essential - more
 for the benefit of system users than for the general user who should be
 protected from physical device names and labels by using logical names.
For those who are interested, the scheme I've used is as follows.
The volume label is defined to be

       <nodename>$<idlabel>_<relvolnumber>

chars     2-6    1  3-7    1   1


 As the node name can be up to six characters, very little is left for
  unique identification of a volume.

 For the <idlabel>, I use values like
                          
                     SY01  ( system disk )
                     US01  ( user disk   )

 _<relvolnumber> is used to identify volumes in disk volume sets.

 Our node names are short ( max five characters ) and so the scheme
          
          5      1   4    1  1

 works well enough.


 John