Back to results
US 2001/0018728 A1Published application
Data storage system having redundant solid state data storage device
AssigneeHewlett-Packard Company
InventorsAndrew Topham, John Richard Clarke
Life of this patent
Estimating the term…
Abstract
A RAID device is provided with a pair of non-volatile solid state data storage devices and one or more rotating disk drives, giving improved access time performance to the array. Data is staged on the pair of solid state data storage devices, and periodically backed up to the rotating disk drive(s).
Claims19
A data storage system comprising:
- at least one rotating disk data storage device;
- a plurality of solid state data storage devices, each having a data capacity less than a data capacity of said rotating disk data storage device;
- wherein each solid state data storage device is divided into a data staging area and a user data area;
- and
- said plurality of data storage devices are arranged such that a set of data is written to at least two of said plurality of solid state data storage devices;
- and
- data is copied from a said data staging area of a said solid state data storage device into said rotating disk data storage device.
4 more elements
A method of storing data in a data storage system comprising a plurality of rotating disk drive data storage devices and a plurality of solid state data storage devices, said method comprising the steps of:
- writing a first block of data to a first user data area in a first said solid state data storage device;
- writing said first block of data to a second data staging area in a second said solid state data storage device;
- writing said data stored in said second data staging area of said second solid state data storage device to a first data partition area in said plurality of rotating disk drives.
Dependencies are inferred from the claim text.