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HP Archive Backup System for OpenVMS Guide to Operations

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Media Management<br />

4.11 Volumes<br />

Table 4–1 MDMS Volume State Transitions<br />

Current State Transition <strong>to</strong> New State New State<br />

TRANSITION<br />

Any State<br />

UNAVAILABLE<br />

UNINITIALIZED<br />

FREE<br />

MDMS SET VOLUME /RELEASE<br />

Volume Release<br />

or au<strong>to</strong>matically on<br />

the volume transition time<br />

MDMS SET VOLUME /UNAVAILABLE<br />

Volume Unavailable<br />

MDMS SET VOLUME /AVAILABLE<br />

Volume Available<br />

MDMS DELETE VOLUME<br />

Volume Delete<br />

MDMS DELETE VOLUME<br />

Volume Delete<br />

FREE<br />

UNAVAILABLE<br />

Previous State<br />

BLANK<br />

BLANK<br />

Note<br />

In the MDMS database, volumes are created with the barcode labels <strong>for</strong> Vision support.<br />

Hence, it is important that the internal label of the volume match with the barcode<br />

label.<br />

Example: If a volume’s barcode label is “BDJ541”, then its corresponding entry in the<br />

MDMS Volume database will be “BDJ541” only.<br />

When a volume is loaded in<strong>to</strong> a drive, its barcode label is compared with the volume’s<br />

internal label. In case of a mismatch, various MDMS operations can wrongly set the<br />

placement of such volume(s) <strong>to</strong> be “ONSITE”.<br />

The following sections describes all the volume attributes in detail, followed by operations that<br />

you can per<strong>for</strong>m on volumes.<br />

4.11.1 Allocation Fields - Account, Username, UIC and Job<br />

The account, username and UIC fields are filled in au<strong>to</strong>matically when a volume is allocated,<br />

and reflect the calling user or specified user during the allocate. The username is a valid Open-<br />

VMS username on the client system per<strong>for</strong>ming the allocate, and the account and UIC is from<br />

the user’s entry in the system Authorization (UAF) file.<br />

These fields are normally maintained by MDMS and are protected fields. You should not modify<br />

these fields unless the volume is deallocated. MDMS maintains the Account, Username and UIC<br />

in the volume even after the volume is deallocated, so that you can “retain” the volume back <strong>to</strong><br />

the allocated state in case of accidental deallocation.<br />

The job name field is not used by ABS, HSM or MDMS.<br />

4-20 Media Management

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