Patent ID: 8069270
Filing Date: 2011-11-29
Classification: H04L

Abstract:
1. A method for implementing read acceleration, the method comprising: receiving at a first fibre channel switch a first read command from a host for a first data block on a tape device; forwarding the first read command to the tape device; generating at the first fibre channel switch a second read command for a second data block on the tape device, the second read command being an anticipatory read command; sending the second read command to the tape device; receiving a first data block from the tape device, the first data block associated with the first read command; sending the first data block to the host; receiving a second data block from the tape device, the second data block associated with the second read command; sending the second data block to the host, wherein the second data block is stored in a buffer in a second fibre channel switch in the course of being transmitted to the host; receiving a second command from the host, the second command being a non-read command or a read command not associated with the first read command; and issuing at the first fibre channel switch or the second fibre channel switch a rewind command to the tape device, wherein the number of blocks rewound corresponds to the number of data blocks received after the first data block is received.