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HP Assigned Three Patents

Auxiliary memory tape cartridge, buffer for RAID controller, capacity-expansion of logical volume

Reading or storing boot data in auxiliary memory of a tape cartridge
Hewlett-Packard Development Company, L.P., Houston, TX , has been assigned a patent (8,914,665) by Evans Rhys Wyn and Slater Alastair Michael, Bristol, UK, for a “reading or storing boot data in auxiliary memory of a tape cartridge.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A tape drive for exchanging data with a tape cartridge, which has tape media and auxiliary memory that is not tape media, is operable, in response to a boot request from a computer apparatus that is bootable from a kind of initial program load device that is not a tape drive, to read boot data stored on the auxiliary memory and to output the boot data for booting the computer apparatus.

The patent application was filed on July 6, 2006 (11/480,917).

Buffer for RAID controller with disabled post write cache
Hewlett-Packard Development Company, L.P., Houston, TX , has been assigned a patent (8,914,576) by Pan Weimin, Spring, TX, for a “
buffer for RAID controller with disabled post write cache.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Enhancing management of controllers in a RAID system when a post-write-cache of a is disabled, by supplying a stripe buffer that stores sequential write requests–and before such requests are actually written in to the physical disc drives. The stripe buffer can temporarily store data, until the data level reaches the stripe buffer size. Thereafter, contents of the stripe buffer can be flushed onto disc.

The patent application was filed on July 30, 2012 (13/561,986).

Capacity-expansion of logical volume
Hewlett-Packard Development Company, L.P., Houston, TX , has been assigned a patent (8,914,578) by DeNeui Nathaniel S. and Black Joseph David, Houston, TX, for a “
capacity-expansion of a logical volume.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Expanding capacity of a logical volume is described. In an example a logical volume is described by a global metadata unit and a plurality of local metadata units. The global metadata unit includes a description of the logical volume, a list of the plurality of local metadata units, and ranges of logical blocks of the logical volume corresponding to the plurality of local metadata units. Each of the local metadata units includes a description of a local RAID set and a range of logical blocks on the local RAID set. When a new drive is to be added to the logical volume to increase capacity, a new local metadata unit is created. The new local metadata unit includes a description of a new local RAID set to be added to the RAID volume and a range of logical blocks on the new drive. The new local metadata unit is added to the global metadata unit to expand the logical volume to incorporate the new local RAID set.

The patent application was filed on September 27, 2012 (13/628,575).

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