초록 ▼

The present invention is related to methods and systems for accessing multimedia data stored on a disk array to ensure that the transfer rate does not fall below a selected minimum transfer rate independent of where the multimedia data is stored on the disk array. In one embodiment, the sizes of blo

The present invention is related to methods and systems for accessing multimedia data stored on a disk array to ensure that the transfer rate does not fall below a selected minimum transfer rate independent of where the multimedia data is stored on the disk array. In one embodiment, the sizes of blocks accessed are varied and the direction of access is selected to enhance read performance. A plurality of blocks are read whose sizes vary linearly as data is being read from a first disk in a backward direction, from an inner diameter side of the first disk, towards an outer diameter of the first disk. Blocks are read from a second disk in a forward direction, towards an inner diameter of the second disk.

대표청구항 ▼

1. A method of profiling a disk, wherein the disk profiling provides information that allows the selection of different block sizes for corresponding different disk zones to thereby improve disk access performance, said method comprising:performing a first backward read operation at a first disk loc

1. A method of profiling a disk, wherein the disk profiling provides information that allows the selection of different block sizes for corresponding different disk zones to thereby improve disk access performance, said method comprising:performing a first backward read operation at a first disk location using a first block size; determining the performance of the first backward read operation; performing a second backward read operation at the first disk location using a second block size; determining the performance of the second backward read operation; and determining what block size should be used for future backward reads of the first disk location based at least in part on the performance of the first backward read operation and the second backward read operation.