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Policy Based Optimization for the Restore of Backup Data

IP.com Disclosure Number: IPCOM000146760D
Original Publication Date: 2007-Feb-21
Included in the Prior Art Database: 2007-Feb-21
Document File: 2 page(s) / 28K

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A method by which a system administrator can group high priority nodes via a new policy construct. This policy construct will 'authorize' nodes in this group to store data in a list of one or more active data pools.

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Policy Based Optimization for the Restore of Backup Data

In a storage management product such as Tivoli Storage Manager (TSM), administrators are able to configure storage pools which are collections (groups) of the same device used for storing end-user data. Those storage pools are used as targets for store operations from the client and are referenced in server policies and other constructs for processing. Storage pools can be arranged in an hierarchy such that the primary copy of the clients data is stored at some level in the hierarchy. As client data is backed up to the hierarchy, the policies are used to direct the data to a storage pool in the hierarchy. This client data entering the hierarchy becomes the active version of the data and the previous active version of the data becomes inactive.

Should a client need to restore data because it has been damaged or lost, the TSM server must search across multiple storage pools and volumes to find intact copies of the active data. Once the data is located, all identified volumes must be mounted to retrieve the data; skipping inactive versions or other clients data to get to the data needed. This process can be quite lengthy. To allow clients a rapid restore option, TSM is introducing active-data pools. These pools will only contain active versions of clients data so that restores do not have to search through inactive or other clients data. The number of volumes needed is reduced since...