Removing domains

Removing individual domains from the network

An individual domain is removed from the MAREN network by assigning all systems and tapes of the domain to another domain:

• If the domain uses its own free tapes, the ADA first of all disables their use:

  //MODIFY-DOMAIN-PARAMETERS DOMAIN=<dom>,FREE-VOLUMES=*FROM-STD-DOMAIN

• Subsequently the ADA assigns the domain’s tapes to another domain. The ADA can do this for free and reserved tapes at the same time if the volumes are only to be assigned to one other domain, e.g. the standard domain:
  //MODIFY-VOLUME-ATTRIBUTES VOLUMES=*ALL,SELECT=*ALL(FROM-DOMAIN=<dom>,NEW-DOMAIN=*STD-DOMAIN)

  However, the ADA can also assign free and reserved tapes to various domains by using first SELECT=*FREE(...) and then SELECT=*RESERVED(...).

• Finally the ADA assigns all systems of the domain to other domains:
  //MODIFY-DOMAIN-ASSIGNMENT HOST=<system>,NEW-DOMAIN=<ndom>

• Alternately the ADA can also completely remove some or all systems in the domain from the MAREN catalog by entering the following for each system:
  //REMOVE-HOST HOST=<system>

Temporarily disabling working with domains

Working with domains can be temporarily disabled without the assignment of systems or tapes to domains being changed. This is practical if, for example, the use of domains is to be replanned but MAREN must continue to operate. To do this the ADA enters the following statement:
//MODIFY-GLOBAL-PARAMETERS DOMAIN-PROTECTION=*NON-ACTIVE

While working with domains is disabled, free tapes are taken exclusively from the standard domain. Sufficient free tapes must therefore be available in the standard domain.

Working with domains can be enabled again later. The assignments of the systems and tapes to the domains are retained provided they have not been explicitly changed in the MAREN catalog in the meantime.

Permanently disabling working with domains

If working with domains is to be permanently disabled, the ADA assigns all systems and tapes of the network to the standard domain and then disables the domains. In detail:

• The ADA disables the use of free tapes in all domains which have these:
  //MODIFY-DOMAIN-PARAMETERS DOMAIN=<dom>,FREE-VOLUMES=*FROM-STD-DOMAIN

• The ADA assigns the tapes of all domains to the standard domain:
  //MODIFY-VOLUME-ATTRIBUTES VOLUMES=*ALL,SELECT=*ALL(FROM-DOMAIN=*ANY,NEW-DOMAIN=*STD-DOMAIN)

• The ADA assigns all systems in the network to the standard domain by entering the following for each system:
  //MODIFY-DOMAIN-ASSIGNMENT HOST=<system>,NEW-DOMAIN=*STD-DOMAIN

• The ADA disables working with domains:
  //MODIFY-GLOBAL-PARAMETERS DOMAIN-PROTECTION=*NON-ACTIVE