HP Archive Backup System for OpenVMS Guide to Operations

4.2.7 Maximum Scratch Time
4.2.8 Media Type
4.2.9 Offsite Location
4.2.10 Onsite Location
4.2.11 OPCOM Classes
4.2.12 Operator Rights
4.2.13 Protection
4.2.14 Relaxed Access
Media Management
4.2 Domain
The maximum scratch time is the maximum scratch time that can be applied to any volume when
it is allocated. The scratch time is the period of time that you wish the volume to stay allocated
because its data is still valid. The maximum scratch time imposes a maximum limit and overrides
the volume’s scratch time if it exceeds the maximum. For HSM, the maximum scratch time
should be set to zero (unlimited), as HSM volumes’ data remains valid until it is repacked. For
ABS uses, this value should be set to the longest period of time you wish to retain any volume.
The domain media type attribute is the media type that is applied to new volumes and drives by
default when they are created. In a simple configuration, you may only have a single media type,
so specifying it in the domain allows you to not have to specify it when creating individual
drives and volumes. It may also be applied as a default to ABS archives. You may always override
the domain default media type with a specific media type when you create or modify drives
and volumes.
The domain offsite location attribute is applied by default to the offsite location field of new volumes
when they are created. The offsite location is an MDMS location that is used for secure
storage of the volumes in case of a disaster. You can always override the domain default offsite
location when you create or modify volumes.
The domain onsite location attribute is applied by default to the onsite location field of new volumes
when they are created. The onsite location is an MDMS location that is used for storage of
the volumes when they are onsite, or quickly accessible to jukeboxes and drives. You can always
override the domain default onsite location when you create or modify volumes.
The domain OPCOM classes attribute contains the default OPCOM classes that are applied to
new node objects by default when they are created. OPCOM classes are classes of users whose
terminals are enabled to receive certain OPCOM classes. You can override the domain default
OPCOM classes with specific classes on a per-node basis when you create or modify a node.
The right MDMS_OPERATOR_RIGHTS is a high-level right that maps to a set of low level
rights suitable for operators managing the domain. The default set of operator rights allow for
normal operator activities such as loading and unloading volumes into drives, showing any
object or operations, and moving volumes offsite and onsite. However, you can add or remove
low level rights to/from the operator rights as you wish.
The domain protection attributes defines the default protection applied to new volumes when
they are created. This protection is used by MDMS when it initializes volumes, and writes the
protection on the magnetic tape volume itself. You can always override the domain default protection
by specifying the protection specifically when creating or modifying a volume.
The relaxed access attribute controls the security when a user or application tries to access an
object without any access control entries, and access control checking is enabled. If relaxed
access is set, such access is granted. If relaxed access is clear, such access is denied. The relaxed
access attribute is ignored if the check access attribute is clear.
Media Management 4–3