Riverbed Technology, Inc.

United Video Properties, Inc.

Joshua Berry

Michael D Ellis

Robert Alan Knee

Michael L Craner

Jon P Radloff

Nitin Gupta

Kiron Vijayasankar

Relatively small capacity solid-state storage devices (SSD) are combined with larger capacity magnetic disk storage devices for storing storage block write data to ensure data consistency. Write operations are stored in a sequential write buffer in an SSD to guarantee the storage of write data and then copied from the sequential write buffer to the destination address in a magnetic disk storage device. The sequential write buffer store write data in locations corresponding to the order of receipt of write operations. Write data from the sequential write buffer is transferred to the magnetic disk storage device in the same order and a checkpoint index is frequently updated to indicate the completion of some transfers. During system initialization, the most recent value of the checkpoint index is retrieved and used as a starting location for transferring write data from the sequential write buffer to the magnetic disk storage device.

Ensuring write operation consistency using multiple storage devices

Growing community of inventors

El Cerrito, CA, United States of America

Joshua Berry