HP Archive Backup System for OpenVMS Guide to Operations

Overview
2.8 MDMS Objects
2.8 MDMS Objects
2.8.1 Domain
2.8.2 Drives
Note
The internal queue manager scheduler interface is the only scheduler interface available
with the ABS-OMT license.
The scheduler interface is invoked when a save or restore request is created, you can either start
the request immediately or define a repetitive schedule.
The scheduler interface is used to:
• Automate and manage ABS jobs that run repeatedly, such as ABS save and even restore
requests.
• Capture events through a logging system, so you can generate accounting and historical
reports. This may vary depending on the scheduler interface.
• Execute all requests remotely as well as locally - transparently to the user.
This section summarizes the MDMS objects for media management. See Chapter 4, Media Management,
for more detailed information on MDMS objects.
The MDMS domain encompasses all objects that are served by a single MDMS database. These
include physical resources such as nodes, jukeboxes, drives and volumes, and logical objects
such as media types, pools and magazines. The domain also encompasses all the users that
access and manage MDMS resources. A domain may encompass a single site location, or can be
geographically distributed, linked via Fibre Channel or a wide area network.
The MDMS domain has a single domain object, which contains:
• The default media type, onsite and offsite locations, protections and dates that are assigned
to new volumes by default
• The default OPCOM classes assigned to new nodes by default
• The type of scheduler to be used in the domain
• The system users to be notified when volumes are deallocated
• The request ID of the next MDMS request
• The mapping of low-level rights to high-level rights
• The level of access control to be assigned to the domain.
A drive is a physical resource that can read and write data to tape volumes. Drives may be of one
of three types:
• Jukebox - The drive is part of a robot-controlled jukebox, and random-access loading and
unloading is performed by the robot
• Stacker - The drive supports the automatic loading of a succession of volumes in sequential
access. Once the volumes are exhausted, operator intervention is needed to load new volumes
• Standalone - The drive requires operator intervention for all loads and unloads.
2-8 Overview