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Procedure documentationProviding WebDAV Server for ILM Store

 

You need an ILM-certified WebDAV server for the storage system for archive files that you manage with SAP NetWeaver ILM. You can create the required ILM stores on the WebDAV server. Each ILM store is a physical instance on the WebDAV server, defined by the web address of the server and the root node of the ILM store.

The store hierarchy is generated under the root node of the ILM store - controlled by the storage service and the archiving programs. The lowest hierarchy node contains the archive files.

The retention and lifecycle management of stored data, up to the time it can be destroyed, is based on criteria defined in the ILM rules. The system stores the criteria for the ILM rules in the form of attributes, together with the information.

Special Features of Data Store for SAP NetWeaver ILM

  • ILM Certification

    To store and manage data according to ILM rules, the WebDAV server, on which you can find the ILM store, needs to be ILM-certified. A server of this type needs to be able to interpret and store the data as well as the related ILM properties. WORM storage (Write Once Read Many) is suited for this purpose. The ILM store has to enable the following:

    • Stored data cannot be changed.

    • Stored data cannot be deleted (in the defined retention periods).

    • The data can be destroyed when the retention periods have expired.

    Note Note

    Providers of storage systems can receive ILM certification from SAP. For more information, see: SAP Integration and Certification Center of SDN under http://www.sdn.sap.com/irj/sdn/iccInformation published on SAP site.

    End of the note.

  • ILM-Enhanced WebDAV Interface

    The interface between the application system and the ILM store must allow for hierarchical storage of information as well as the transfer of attributes of hierarchy nodes and files. Examples of attributes are the start and end dates of a retention period.

    Note Note

    You can find providers of ILM-enhanced WebDAV interfaces in the SAP Partner Information Center at http://www.sap.com/ecosystem/customers/directories/SearchSolution.epxInformation published on SAP site. Under SAP-Defined Integration Scenarios, search for BC-ILM 3.0.

    End of the note.

  • Archive Hierarchy

    The ILM store must allow the saving of files as resources in the archive hierarchy. The following special features are in effect:

    • Structured Data

      When you store your archive files using the ILM-enhanced WebDAV interface, the system creates a hierarchy based on the storage rule under the following hierarchy nodes:

      • ad for actually archived (moved) information

      • sn for copied information (snapshots)

    • Unstructured Data

      You can attach references to unstructured data such as attachments (documents) and print lists to the archive hierarchy. The unstructured data is stored using the ArchiveLink interface. The system stores the references to the storage location of unstructured data in a parallel hierarchy. This way, the unstructured data remains closely linked to its corresponding structured data and can inherit its properties. The system saves the references stored using ArchiveLink under the following hierarchy nodes:

      • al for attachments

      • dl for print lists

Procedure

  1. Install an ILM-certified WebDAV server that meets the requirements described above.

  2. To be able to create a connection between the store service being used and the WebDAV Server, prepare the following information:

    • Internet address (URL) of the WebDAV servers

    • Logon user of the WebDAV server with password

    • Root node of the ILM store and initial path to the root node