The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2000
Filed:
Dec. 19, 1997
Brent Cameron Beardsley, Tucson, AZ (US);
Michael Thomas Benhase, Tucson, AZ (US);
Forrest Lee Wade, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A data storage system and method for securely storing data includes (a) a host CPU; (b) a non-volatile storage (NVS) memory for storing data; (c) a processor, the processor being coupled to the host CPU and the NVS memory and monitoring availability of space in the NVS memory and in a non-volatile buffer (NV-Buffer); and (d) the NV-Buffer, the NV-Buffer being coupled to the host CPU, the NVS memory, and the processor, upon receiving a request to write data into the NVS memory, the host CPU storing data to be transferred to the NVS memory into the NV-Buffer, and upon receiving a confirmation message that data of a write operation to the NV-Buffer is committed, the NV-Buffer transferring the data to the NVS memory. The NVS memory includes a fast dump space for storing data transferred from the NV-Buffer when a main power is down and for restoring back data from the NVS memory to the NV-Buffer when the power is up. The NV-Buffer is a fast drain buffer and is equipped with a backup power source sufficient to hold up a power needed to transfer the data when the power is down.