Improve Recall Performance with Oracle StorageTek VSM's Concurrent Tape Recall/Mount Feature

Project and Program: MVS, MVS Storage Management

Tags: Proceedings, 2012, SHARE in Atlanta 2012

In a VSM virtual tape environment, accessing a virtual volume (VTV) that is already resident in the VTSS buffer is almost immediate.  However, any VTV that is not buffer resident has to be recalled from tape.  Traditionally, this has required the multi-volume cartridge (MVC) to be mounted and the VTV to be recalled in its entirety into the VTSS buffer before the VTV can be mounted on a virtual tape drive (VTD) and then accessed by the application.  Although tape drives have gotten significantly faster, VTV size has also increased.  What this means is that, with VTV sizes up to 4GB, recalls can take a long time and impact processing.  Find out about Oracle StorageTek VSM's latest feature that drastically improves mount time by initiating concurrent tape recall/mount and reduces the time to first byte as seen by the application. Irene Adler, Oracle

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