Dot Hill Assigned Two Patents

Metadata protection system for storage
Dot Hill Systems Corporation, Longmont, CO, has been assigned a patent (8,990,542) developed by Davies, Ian Robert, Longmont, CO, for a “efficient metadata protection system for data storage.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A method for protecting page-level metadata in a storage system is provided. The method includes providing in a page table first protection data, receiving a command to read data from a page of the storage system corresponding to the page table, and comparing first protection data to second protection data. If the first protection data is different than the second protection data, then the method includes identifying third protection data in the storage system and comparing the third protection data to the first protection data. If the third protection data is different than the first protection data, then the method includes determining that the page-level metadata is inconsistent.“

The patent application was filed on September 12, 2012 (13/612,295).

Pull data replication model
Dot Hill Systems Corporation, Longmont, CO, has been assigned a patent (8,990,153) developed by Wayda, James George, Laguna Nigel, CA, Lee, Kent, Ladera Ranch, CA, and Rodriguez, Elizabeth G., Vista, CA, for a “pull data replication model.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A data storage system, device, and method are provided for replicating data between different data storage systems or appliances. More specifically, the present invention affords communications between heterogeneous data storage systems that potential employ different communication protocols. A bridging communication protocol is utilized by one or both storage systems in order to accommodate different communication protocols. Alternatively, a storage appliance connecting the data storage systems may employ the bridging communication protocol.“

The patent application was filed on November 20, 2006 (11/561,680).