Apparatus and method for sharing resources between storage devices
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Replicating tracks from a first storage site to a second and third storage sites
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Adjustment of the number of task control blocks allocated for discard scans
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Automatically preventing large block writes from starving small block writes in a storage device
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Synchronous and asynchronous discard scans based on the type of cache memory
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Performing asynchronous discard scans with staging and destaging operations
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Adaptive cache promotions in a two level caching system
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Handling high priority requests in a sequential access storage device having a non-volatile storage cache
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Multi-stage cache directory and variable cache-line size for tiered storage architectures
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Increased destaging efficiency by smoothing destaging between current and desired number of destage tasks
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Cache management of track removal in a cache for storage
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Demoting tracks from a first cache to a second cache by using an occupancy of valid tracks in strides in the second cache to consolidate strides in the second cache
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Demoting tracks from a first cache to a second cache by using a stride number ordering of strides in the second cache to consolidate strides in the second cache
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Managing caching of extents of tracks in a first cache, second cache and storage
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Adjustment of destage rate based on read and write response time requirements
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Periodic destages from inside and outside diameters of disks to improve read response time via traversal of a spatial ordering of tracks
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Promotion of partial data segments in flash cache
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Management of partial data segments in dual cache systems
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Dynamically adjusted threshold for population of secondary cache
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Selective space reclamation of data storage memory employing heat and relocation metrics
