Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1995-07-19
1996-03-26
Swann, Tod R.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
395439, 39518201, 369 4427, 369 47, 371 491, 371 201, G06F 1120
Patent
active
055028365
ABSTRACT:
A method for restriping a striped disk array in a computer system without requiring the removal of the system from normal operation provides an efficient method to expand the disk array and incorporate the new storage into the striping scheme. When the operating system is not requesting access to the hard disk subsystem, the data is repositioned. The data on the array need not be backed-up onto alternate media before the array is expanded. Once new storage space is installed, the data is repositioned from disk to disk under the control of a disk controller until a stripe of the new array is expanded. Pointers stored in non-volatile memory maintain the location of the next free location and the next data block to be repositioned. The pointers are also used by the disk controller to locate the files during the array expansion process. The process is repeated until all of the data is relocated in the expanded array. After the relocation is complete, empty storage at the end of each disk remains. Once a new driver is installed to properly report the new volume to the operating system, the controller reports this new space as a separate volume of available memory storage to the operating system.
REFERENCES:
patent: 4775978 (1988-10-01), Hartness
patent: 5134619 (1992-07-01), Henson et al.
patent: 5140592 (1992-08-01), Idleman et al.
patent: 5179704 (1993-01-01), Jibbe et al.
patent: 5210860 (1993-05-01), Pfeffer et al.
patent: 5285451 (1994-02-01), Henson et al.
Chang, C. C., Application of Principle Component Analysis to Multi-Disk Concurrent Accessing, BIT, vol. 28, No., 2, 1988, pp. 205-214.
Kim, Michelle Y., Synchronized Disk Interleaving, IEEE Transactions On Computers, vol. C-35, No. 11, Nov. 1986.
Katz, et al., A Project on High Performance I/O Subsystems, Computer Architecture News, vol. 17, No. 5, Sep. 1989, pp.24-31.
Reddy, A. L. Narasimah, A Study of Parallel Disk Organizations, Computer Architecture News, vol. 17, No. 5, Sep. 1989, pp. 40-47.
Olson, Thomas M., Disk Array Performance in a Rnadom IO Environment, Computer Architecture News, vol. 17, No. 5, Sep. 1989, pp. 71-77.
Dibble, et al., Beyond Striping: The Bridge Multiprocessor File System, Computer Architecture News, vol. 17, No. 5, Sep. 1989, pp. 32-39.
Peterson, Donald A., Redundant Disk Arrays Enhance Data Safety to Support Network Servers, Computer Technology Review, Winter 1990, pp. 44-47.
Digital Equipment Co., Vax Disk Striping Driver for VMS: Supercomputer-class I/O on your VAX System, 1989.
Intel Corporation, 82355 Bus Master Interface Controller Preliminary Data Sheet, Peripheral Components, Oct. 1990.
Beard Robert J.
Hale Robert P.
AST Research Inc.
Peikari James
Swann Tod R.
LandOfFree
Method for disk restriping during system operation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for disk restriping during system operation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for disk restriping during system operation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-922938