Optimizing data transfer performance
When you use Data Protection for SAP , data
is passed from disk through to the network and finally to tape. A
balanced configuration can help to prevent bottlenecks and to ensure
optimized performance.
Understanding data throughput and bottlenecks Throughput rates differ for different environments because of different disk, network bandwidth, server systems, number of tapes, and configuration settings. When you are moving data, certain elements that are used in the movement of data can be tuned to improve data throughput. Using performance sensors Data Protection for SAP uses sensors that observe incoming and outgoing data streams. They measure throughput and the idle time of the I/O threads in comparison to the duration of the backup. This function provides a way to determine whether the streams of incoming and outgoing Data Protection for SAP data are balanced.Understanding data transfer components and performance factors During data transfer, a continuous stream of data is generated between the SAP database server, the network, and the IBM Storage Protectâ„¢ server. The weakest component in this stream decreases the overall data transfer rate.Understanding multiple server support Data Protection for SAP supports multiple servers, which can distribute backup data among two (or more) backup servers. This feature helps eliminate constraints that are frequently encountered among backup servers.Understanding multiple session support You can use multiple tape drives simultaneously to increase the transfer rate to or from the IBM Storage Protectâ„¢ server. Several backup sessions access the database in parallel on the database server, and the data is written simultaneously to several tape drives.Understanding multiplexing Multiplexing uses parallel access points to data on the database server. This configuration is useful when tape drives are used during database backup operations on the backup server. Understanding multiple network paths Data Protection for SAP allows multiple network connections (paths) for data transfer between the database server and the backup server. Parallel paths can be used to eliminate network points of constraint.