Volatile memory representation of nonvolatile storage device set
The storage devices of a storage device set (e.g., a RAID array) may generate a nonvolatile representation of the configuration of the storage device set, including logical disks, spaces, storage pools, and layout and provisioning plans, on the physical media of the storage devices. A computer acces...
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Main Author | |
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Format | Patent |
Language | English |
Published |
07.10.2014
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Subjects | |
Online Access | Get full text |
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Summary: | The storage devices of a storage device set (e.g., a RAID array) may generate a nonvolatile representation of the configuration of the storage device set, including logical disks, spaces, storage pools, and layout and provisioning plans, on the physical media of the storage devices. A computer accessing the storage device set may also generate a volatile memory representation of the storage device set to use while accessing the storage devices; however, the nonvolatile representation may not be performant due to its different usage and characteristics. Presented herein are techniques for accessing the storage device set according to a volatile memory representation comprising a hierarchy of logical disks, slabs, and extents, and an accessor comprising a provisioning component that handles slab accesses while applying provisioning plans, and that interfaces with a lower-level layout component that translates slab accesses into storage device accesses while applying layout plans to the storage device set. |
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Bibliography: | Application Number: US201113230832 |