Introducing Media Management Administrator › Understanding Media Management Administrator › MM Admin - Rotations

MM Admin - Rotations

Rotations set the policies governing tape volume retention for your vault and determine when to move tape volumes. Rotations are associated with schedules, and each rotation you define points to a vault.

The retention conditions set on the Create Rotation dialog determine whether a tape volume is retained by Media Management or released to Tape Service. If a tape volume meets one of these conditions, it remains in the same rotation. None of these conditions have priority over the other so if any condition is true, the media will stay in the vault--even if conditions appear to conflict. For example, if you select 60 in the Hold Days field but enter a date that is only 30 days away in the By Date field, the tape volume will stay for 60 days.

When the Retention period for a tape volume expires, the tape volume is automatically unvaulted and returned to Tape Service to be reused.

When you select the Rotation object, the right-pane of the MM Admin interface lists the following information about previously defined rotations:

• Rotation Name--The name of the rotation.
• Vault Name--The name of the vault the rotation is associated with.
• Retention Hold Days--Indicates the number of days past the Last Write date to hold the tape volumes in this rotation.
• Retention Keep for Cycles--Indicates the specific number of vault cycles tape volumes that are held in this rotation.
• Retention Days Elapsed from First Format Date--Indicates that tape volumes are held in this rotation until a specified number of days have elapsed since they were first formatted.
• Retention Permanent--Indicates that tape volumes will remain in this rotation permanently.
• Retention By Tape Expiration Date--Indicates that tape volumes remain in this rotation until the tape expiration dates have passed.
• Retention By Date--Indicates that tape volumes remain in this rotation until the specified date has passed.
• Create Date--The date the rotation was created.
• Description--A user-defined description of the rotation.

More information:

Create Rotations

Media Management Administrator

Vaulting Process