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IBM System Storage N series Software Guide by Marco Schwarz, Tom Provost, Steven Pemberton, Dirk Peitzmann, Jeff Lin, Roland Tretau

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Consistency groups
This chapter describes the N series support for Snapshot consistency groups.
Consistency group support is provided in N series Data ONTAP 7.2 and later and allows creation of consistent Snapshot backups across multiple volumes and controllers.
We also explain the need for application backup consistency, as well as the methods and software available for using N series consistency groups.
34.1 Snapshot backup and application consistency
Enabling recovery from any type of array-based backup (Snapshot) solution requires some planning ...

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