APPARATUS, SYSTEM AND METHOD FOR STORAGE CACHE DEDUPLICATION
First Claim
1. An apparatus comprising:
- a storage cache partition table having at least one entry associating a specified storage address range with one or more specified storage partitions;
a deduplication module configured to create an entry in the storage cache partition table wherein the specified storage partitions contain identical data to one another within the specified storage address range thus requiring only one copy of the identical data to be cached; and
a read module configured to accept a read storage address within a read partition of a storage subsystem, to locate a read entry wherein the specified storage address range contains the read storage address, and to determine whether the read partition is among the one or more specified storage partitions if the read entry is found.
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus, system, and method are disclosed for deduplicating storage cache data. A storage cache partition table has at least one entry associating a specified storage address range with one or more specified storage partitions. A deduplication module creates an entry in the storage cache partition table wherein the specified storage partitions contain identical data to one another within the specified storage address range thus requiring only one copy of the identical data to be cached in a storage cache. A read module accepts a storage address within a storage partition of a storage subsystem, to locate an entry wherein the specified storage address range contains the storage address, and to determine whether the storage partition is among the one or more specified storage partitions if such an entry is found.
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Citations
24 Claims
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1. An apparatus comprising:
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a storage cache partition table having at least one entry associating a specified storage address range with one or more specified storage partitions; a deduplication module configured to create an entry in the storage cache partition table wherein the specified storage partitions contain identical data to one another within the specified storage address range thus requiring only one copy of the identical data to be cached; and a read module configured to accept a read storage address within a read partition of a storage subsystem, to locate a read entry wherein the specified storage address range contains the read storage address, and to determine whether the read partition is among the one or more specified storage partitions if the read entry is found. - View Dependent Claims (2, 3, 4, 5)
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6. A system comprising:
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a storage cache partition table having at least one entry associating a specified storage address range with one or more specified storage partitions; a deduplication module configured to create an entry in the storage cache partition table wherein the specified storage partitions contain identical data to one another within the specified storage address range thus requiring only one copy of the identical data to be cached; a read module configured to accept a read storage address within a read partition of a storage subsystem, to locate a read entry wherein the specified storage address range contains the read storage address, and to determine whether the read partition is among the one or more specified storage partitions if the read entry is found; a write module configured to accept a write storage address within a write partition of the storage subsystem, to locate a write entry wherein the specified storage address range contains the write storage address, and to delete the write partition from among the one or more specified storage partitions if the write entry is found; a storage subsystem comprising the storage partitions; and one or more computers upon which to run the foregoing modules. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A computer program product comprising a computer readable medium having computer usable program code executable to perform operations for deduplicating storage cache data, the operations of the computer program product comprising:
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creating an entry in a storage cache partition table associating a specified storage address range with one or more specified storage partitions wherein the specified storage partitions contain identical data to one another within the specified storage address range thus requiring only one copy of the identical data to be cached; accepting a read storage address within a read partition of a storage subsystem, to locate a read entry wherein the specified storage address range contains the read storage address, and to determine whether the read partition is among the one or more specified storage partitions if the read entry is found; and accepting a write storage address within a write partition of the storage subsystem, to locate a write entry wherein the specified storage address range contains the write storage address, and to delete the write partition from among the one or more specified storage partitions if the write entry is found. - View Dependent Claims (15, 16)
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17. A method for deduplicating storage cache data, the method comprising the steps of:
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creating an entry in a storage cache partition table associating a specified storage address range with one or more specified storage partitions wherein the specified storage partitions contain identical data to one another within the specified storage address range thus requiring only one copy of the identical data to be cached; accepting a read storage address within a read partition of a storage subsystem, to locate a read entry wherein the specified storage address range contains the read storage address, and to determine whether the read partition is among the one or more specified storage partitions if the read entry is found; and accepting a write storage address within a write partition of the storage subsystem, to locate a write entry wherein the specified storage address range contains the write storage address, and to delete the write partition from among the one or more specified storage partitions if the write entry is found. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification