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AssigneeEMC Corporation
InventorsEitan Bachmat, Yuval Ofek, Tao Kai Lam, Victoria Dubrovsky, Ruben Michel
Estimating the term…
Load balancing of activities on physical disk storage devices is accomplished by monitoring reading and writing operations to blocks of contiguous storage locations on the physical disk storage devices. A list of exchangeable pairs of blocks is developed based on size and function. Statistics accumulated over an interval are then used to obtain access activity values for each block and each physical disk drive. These activities are represented as disk seek, latency and data transfer times. A statistical analysis leads to a selection of one block pair. After testing to determine any adverse effect of making that change, the exchange is made to more evenly distribute the loading on individual physical disk storage devices.
A method for balancing access activity on a plurality of physical disk storage devices including physical disk storage devices divided into blocks of contiguous storage locations and characterized by latency and data transfer times, said method comprising the steps of:
A method for balancing activity on a plurality of physical disk storage devices including disk storage devices divided into a plurality of logical volumes and include movable read/write heads, said method comprising the steps of:
Dependencies are inferred from the claim text.