END-TO-END DATA PROTECTION SUPPORTING MULTIPLE CRC ALGORITHMS
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Abstract
A method for providing end-to-end data protection while supporting multiple cyclic-redundancy-check (CRC) algorithms is disclosed. In one embodiment, such a method includes receiving, from a first host device, a data block protected by a first CRC. The first CRC is generated using a first CRC algorithm. The method checks the integrity of the data block using the first CRC and the first CRC algorithm. The method then computes a second CRC for the data block using a second CRC algorithm different from the first CRC algorithm. The method then stores the data block, the first CRC, and the second CRC on a storage medium, such as magnetic tape. A corresponding apparatus is also disclosed.
12 Citations
25 Claims
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1-12. -12. (canceled)
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13. An apparatus for providing end-to-end data protection while supporting multiple cyclic-redundancy-check (CRC) algorithms, the apparatus comprising:
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a storage device to receive, from a first host device, a data block protected by a first CRC, the first CRC generated by a first CRC algorithm; the storage device further configured to check the integrity of the data block using the first CRC and the first CRC algorithm; the storage device further configured to compute a second CRC for the data block using a second CRC algorithm different from the first CRC algorithm; and the storage device further configured to store the data block, the first CRC, and the second CRC on a storage medium. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification