When jobs request virtual tape data residing on physical tape, the corresponding volume must be mounted and the data set migrated back to disk cache, causing a delay for all jobs requesting data not already in cache.
Why Rocket Virtual Tape Advanced Recall?
Virtual recall mount time is about 200 to 300 seconds for each recall. Even with a data center daily hit rate of 94 percent, the time savings can be significant. By eliminating thousands of small delays a day, VTAR can save hours a day in wait time.