Migration of control in a distributed segmented file system

a file system and segmented file technology, applied in the field of computer storage and file systems, can solve the problems of limited throughput, no transparent data sharing between file servers, and limited storage capacity, and achieve the effects of large storage capacity and client load, easy addition of storage capacity, and effective performan

Inactive Publication Date: 2004-11-25
HEWLETT PACKARD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

0025] Embodiments of the invention may provide one or more of the following advantages. In a distributed-file system, storage capacity can be added easily, data sharing may be permitted, and effective performance may be provided with very large storage capacity and client loads.
0026] In embodiments of the invention, a file server may be combined with other computational elements, as in w...

Problems solved by technology

Unfortunately, however, SASs are only expandable internally--there is no transparent data sharing between file servers.
Further, with SASs, throughput is limited by the speed of the fixed number of busses internal to the file server.
The disadvantage of this technology is that a file system cannot expand beyond the limits of single NAS machine.
Consequently, administering and maintaining more than a few NAS units, and consequ...

Method used

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  • Migration of control in a distributed segmented file system
  • Migration of control in a distributed segmented file system
  • Migration of control in a distributed segmented file system

Examples

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Embodiment Construction

[0045] The present invention involves novel methods, apparatus and data structures for providing advanced data storage. The following description is presented to enable one skilled in the art to make and use the invention, and is provided in the context of particular applications and their requirements. Various modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles set forth below may be applied to other embodiments and applications. Thus, the present invention is not limited to the embodiments shown and the invention includes the following disclosed methods, apparatus, articles of manufacture, and data structures and equivalents thereof.

[0046] In the following, environments in which the present invention may be employed are introduced in .sctn. 4.1. Then, functions that may be performed by the present invention are introduced in .sctn. 4.2. Then, operations, data structures, methods and apparatus that may be used to effec...

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Abstract

A method of managing segments in a distributed-file system implemented by a plurality of file servers includes determining a segment of the distributed-file system controlled by a first file server for which control is to be migrated, selecting a second file server, that is different from the first file server, to take control of the segment, and moving control of the segment from the first file server to the second file server.

Description

.sctn. 0. CROSS-REFERENCE TO RELATED ACTIONS[0001] This application claims the benefit of U.S. application Ser. No. 09 / 950,555 filed Sep. 11, 2001, that claims the benefit of U.S. Provisional Application No. 60 / ______ filed Sep. 12, 2000 entitled "ENTERPRISE DATA STORAGE SYSTEM AND METHOD." This application also claims the benefit of U.S. Provisional Application No. 60 / 395,839 filed Jul. 15, 2002 entitled "STATISTICAL PROPERTIES OF RANDOM METADATA ACCESS USING LARGE NUMBERS OF IBRIX CONTROLLERS." This application also claims the benefit of U.S. Provisional Application No. 60 / ______ filed Feb. 18, 2003 entitled "METHODS FOR LOCATING ENTITIES IN A DISTRIBUTED FILE SYSTEM TO FACILITATE LOAD BALANCING." This application also claims the benefit of U.S. Provisional Application No. 60 / ______ filed Feb. 18, 2003 entitled "NON-HIERARCHICAL DISTRIBUTED FILE SYSTEM." This application also claims the benefit of U.S. Provisional Application No. 60 / ______ filed Feb. 18, 2003 entitled "STORAGE ADM...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F17/302G06F17/30873H04L67/1097G06F16/1827G06F16/954
Inventor SRINIVASAN, SUDHIRORSZAG, STEVEN A.
Owner HEWLETT PACKARD CO
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