Think you don't waste a lot of time on virtual tape recalls?
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Though varying from one manufacturer to the next, an average virtual recall mount time is about 200-300 seconds per recall. Even if the data center's cache hit rate is just 94% daily, the time savings can be significant. If 2,000 virtual mounts are created daily and six percent of those mounts (120) are recalls, at 300 seconds per recall those 120 recalls would cause 10 hours of wait time.
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Drastically reduce periodic cycle times
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Workloads that are not run every day will require the most volume recalls since they possess the greater chance of having required tape data sets migrated from cache due to inactivity. The windows for all your weekly, monthly, etc. workloads will suffer due to the additional processing time necessary to service the recalls. VTAR eliminates this wait time and allows these periodic cycles to run faster.
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Postpone or eliminate cache upgrades
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By optimizing the recall of virtual tape datasets, VTAR helps you make more effective use of your existing virtual tape cache and can eliminate or postpone expensive virtual tape hardware cache upgrades.
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No additional batch processing overhead
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Before recalling a virtual tape dataset, VTAR will first verify that the dataset hasn't already been recalled to cache by another process or previous job. There is no unnecessary overhead.
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