WO1997011426B1 - Universal storage management system - Google Patents

Universal storage management system

Info

Publication number
WO1997011426B1
WO1997011426B1 PCT/US1996/014855 US9614855W WO9711426B1 WO 1997011426 B1 WO1997011426 B1 WO 1997011426B1 US 9614855 W US9614855 W US 9614855W WO 9711426 B1 WO9711426 B1 WO 9711426B1
Authority
WO
WIPO (PCT)
Prior art keywords
interface
commands
client computer
storage
management system
Prior art date
Application number
PCT/US1996/014855
Other languages
French (fr)
Other versions
WO1997011426A1 (en
Filing date
Publication date
Application filed filed Critical
Publication of WO1997011426A1 publication Critical patent/WO1997011426A1/en
Publication of WO1997011426B1 publication Critical patent/WO1997011426B1/en

Links

Abstract

A universal storage management system which facilitates storage of data from a client computer (10) and computer network (12) is disclosed. The universal storage management system functions as an interface between the client computer (10) and at least one storage device (14), and facilitates reading and writing of data by handling I/O operations. I/O operation overhead in the client computer (10) is reduced by translating I/O commands from the client computer (10) into high level commands which are employed by the storage management system to carry out I/O operations. The storage management system also enables interconnection of a normally incompatible storage device and client computer (10) by translating I/O requests into an intermediate common format which is employed to generate commands which are compatible with the storage device (14) receiving the request. Files, error messages and other information from the storage device (14) are similarly translated and provided to the client computer.

Claims

AMENDED CLAIMS[received by the International Bureau on 3 April 1997 (03.04.97); original claims 1, 7-11, 14-18 and 28 amended; remaining claims unchanged (6 pages)]
1. A device for providing an interface between at least one client computer and at least one storage device, the client computer having a first microprocessor and running a software application and a first operating system which produce input and output " (I/O) " commands, and the storage device containing at least one file, comprising: a file management system operative to translate the I/O commands produced by the software application and operating system in the client computer into high level commands, said file management system being further operative to receive high level commands and translate such received high level commands to I/O commands; and a second microprocessor operative to execute said high level commands received from said file management system and access the storage device to copy data from the client computer to at least one storage device.
2. The interface device of claim 1 wherein said second microprocessor employs a second operating system which is distinct from the first operating system.
3. The interface device of claim 2 wherein said file management system includes a file device driver which interfaces the first operating system and the file management system by functioning to receive data and commands from the client computer and redirect the received data and commands to the file management system.
4. The interface connector of claim 3 wherein said file management system further functions to convert received data and commands to a selected format prior to redirection thereof.
5. The interface device of claim 4 wherein said file device driver resides in the client computer.
6. The interface device of claim 5 wherein said file management system further includes a transport driver having first and second sections for facilitating transfer of data and commands between said file device driver and said file management system, said first section receiving data and commands from said file device driver and said second section relaying such data and commands to said file management system.
7. The interface device of claim 6 wherein said file management system includes a file system supervisor routine operative to select file-level applications for receipt of the data from the client computer and provide storage commands.
8. The interface device of claim 7 wherein said file system supervisor is further operative to select a storage device for storage of data received from the client computer.
9. The interface device of claim 7 wherein said file system supervisor is further operative to separate data received from the client computer down into blocks.
10. The interface device of claim 9 wherein said file management system further includes at least one device handler routine operative to interface said file system supervisor with the at least one storage device by driving the at least one storage device in response to said storage commands from said file system supervisor.
11. The interface device of claim 10 wherein said file management system further includes a device handler for each of said at least one storage device.
12. The interface device of claim 6 further including a kernel operative to directly execute I/O commands from the software application in the client computer.
13. The interface driver of claim 12 wherein said kernel utilizes the first operating system.
14. The interface device of claim 13 wherein said SMA kernel includes a scheduler routine for supervising flow of data by selectively relaying blocks of data to RAID applications.
15. A device for providing an interface between at least one client computer and at least one storage device, the client computer having a first microprocessor and running a software application and a first operating system which produce input and output ("I/O") commands, the storage device containing at least one file, comprising: a plurality of storage devices; a microprocessor controlled interconnection device interposed between the client computer and said plurality of storage devices to control access thereto, said microprocessor controlled interconnection device having control over power supplied to individual storage devices of said plurality of storage devices.
16. The interface device of claim 15 wherein said interconnection device executes a reconfiguration routine which identifies storage device identification ("ID") conflicts among said plurality of storage devices.
17. The interface device of claim 16 wherein said reconfiguration routine powers-up individual storage devices of said plurality of storage devices while executing. - -
18. The interface device of claim 17 wherein, when a storage device ID conflict is detected, said reconfiguration routine changes the ID of at least one of the storage devices in conflict .
19. The interface device of claim 15 wherein said interconnection device executes a media tracking routine which identifies storage device types.
20. The interface device of claim 19 wherein said media tracking routine automatically selects a storage device for WRITE operations.
21. The interface device of claim 20 wherein said media tracking routine selects said storage device based upon the block size of the data to be stored.
22. The interface device of claim 20 wherein said media tracking routine selects said storage device based upon media write speed.
23. The interface device of claim 15 including a plurality of power supplies for supplying power to said storage devices, said storage devices being grouped into racks such that at least one global power εupply is available to serve as backup to a plurality of such racks of power supplies.
24. The interface device of claim 15 including a plurality of power supplies for supplying power to said storage devices, said storage devices being grouped into racks such that each rack is associated with a global power supply available to serve as backup to the rack with which the global power supply is associated.
25. The interface device of claim 15 including a plurality of power supplies, said microprocessor controlled interconnection device monitoring said power supplied to detect failed devices.
26. The interface connector of claim 25 wherein said storage devices are disposed in a protective chassis, and failed devices are automatically ejected from said chassis.
27. The interface connector of claim 15 further including a redundant array of independent disks.
28. The interface connector of claim 27 further including an exclusive-OR ("XOR") router having dedicated XOR hardware.
29. The interface connector of claim 28 wherein at least one surface of each disk m said redundant array of independent disks is dedicated to parity operations.
30. The interface connector of claim 28 wherein at least one disk m said redundant array of independent disks is dedicated to parity operations.
31. The interface connector of claim 28 wherein said disks of said redundant array of independent disks are arranged on a plurality of separate channels.
32. The interface connector of claim 31 wherein each said channel includes a dedicated memory pool .
33. The interface connector of claim 32 wherein said channels are interconnected by first and second thirty-two bit wide busses.
34. The interface connector of claim 27 further including a graphic user interface for displaying storage system status and receiving commands from a user.
35. The interface connector of claim 27 including hardware for data splitting and parity generation "on the fly" with no performance degradation.
PCT/US1996/014855 1995-09-18 1996-09-17 Universal storage management system WO1997011426A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US392095P 1995-09-18 1995-09-18
US60/003,920 1995-09-18

Publications (2)

Publication Number Publication Date
WO1997011426A1 WO1997011426A1 (en) 1997-03-27
WO1997011426B1 true WO1997011426B1 (en) 1997-05-15

Family

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Family Applications (1)

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US (2) US6098128A (en)
WO (1) WO1997011426A1 (en)

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