Multilevel storage system with hybrid data compression
First Claim
1. A multilevel data storage system comprising:
- an interface through which data are transferred in a first compression state;
an upper-level storage device in which data are stored in a second compression state, the second compression state being higher than the first compression state;
a lower-level storage device in which data are stored in a third compression state, the third compression state being lower than the second compression state;
a first compression state modifying engine between the interface and the upper-level storage device; and
a second compression state modifying engine between the upper-level storage device and the lower-level storage device.
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Accused Products
Abstract
A multilevel data storage system that comprises an interface, an upper-level storage device, a lower-level storage device and first and second compression state modifying engines. Data are transferred through the interface in a first compression state. Data are stored in the upper-level storage device in a second compression state that is higher than the first compression state. Data are stored in the lower-level storage device in a third compression state that is lower than the second compression state. The first compression state modifying engine is located between the interface and the upper-level storage device. The second compression state modifying engine is located between the upper-level storage device and the lower-level storage device.
173 Citations
18 Claims
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1. A multilevel data storage system comprising:
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an interface through which data are transferred in a first compression state; an upper-level storage device in which data are stored in a second compression state, the second compression state being higher than the first compression state; a lower-level storage device in which data are stored in a third compression state, the third compression state being lower than the second compression state; a first compression state modifying engine between the interface and the upper-level storage device; and a second compression state modifying engine between the upper-level storage device and the lower-level storage device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification