Managing Devices and Media › Funzionamento dei pool di supporti › How You Can Create a Rotation

How You Can Create a Rotation

To create a rotation, select the Schedule object in the left pane of the MM Admin window, double-click it, and select a schedule from the list. Double-click the schedule to access the Rotation object. Right-click the Rotation object and select Create. The Create Rotation dialog appears where you can set the following:

• Sequence Number--MM Admin automatically generates a sequence number for your rotation. Vault cycles start with the lowest sequence number. The default for a new rotation is 10 and the next new rotation that follows is 20. If you would rather assign a particular sequence number, select the Sequence Number option and select a number.
• Vault Name--A vault name must be specified for each rotation. You can select the name of a vault from the drop-down vault list.
• In the Retention fields, set any of the following conditions:
  • Hold Days--The number of days you want tape volumes to be retained.
  • Keep for Cycles--The number of vault cycles you want tape volumes to be retained in this rotation.
  • Days Elapsed from First Format Date--Starting from the day the tape volumes were first formatted, enter the number of days you want tape volumes to remain in this rotation.
  • By Date--Tape volumes are retained in this rotation until the date you enter here is reached.
  • By Tape Expiration Date--Tape volumes are retained in this rotation until their expiration date passes.
  • Permanent--All tape volumes are retained in this rotation permanently.

Se soddisfa una di queste condizioni, il volume nastro resterà nella stessa rotazione. Nessuna di queste condizioni ha la priorità sull'altra, pertanto se una delle condizioni è soddisfatta, il supporto resterà nel classificatore, anche se le due condizioni sembrano essere in conflitto. Ad esempio, se si seleziona 60 nel campo Giorni di sospensione ma si immette una data distante solo 30 giorni nel campo per data, il volume nastro resterà per 60 giorni.

When you click Add, the new rotation is saved and added to the Rotation branch in the MM management window.

When the Retention period for a tape volume expires, the tape volume is unvaulted and returned to Tape Service to be re-used.