JPS57195397A - Locally doubled storage device - Google Patents
Locally doubled storage deviceInfo
- Publication number
- JPS57195397A JPS57195397A JP56080178A JP8017881A JPS57195397A JP S57195397 A JPS57195397 A JP S57195397A JP 56080178 A JP56080178 A JP 56080178A JP 8017881 A JP8017881 A JP 8017881A JP S57195397 A JPS57195397 A JP S57195397A
- Authority
- JP
- Japan
- Prior art keywords
- storage device
- module
- circuit
- output
- decoder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Techniques For Improving Reliability Of Storages (AREA)
- Hardware Redundancy (AREA)
Abstract
PURPOSE: To evade the interruption of a system by irreducible necessary local doubling by using optional one of modules in a main storage device as a backup module for doubling.
CONSTITUTION: For example, the 1st module selection register 13 is set to (01) and the 2nd module selection register 20 is set to (11). In this case, when (01) is selected by an address register 10, the output 102 of a decoder 11 goes up to (1). Once the terminal S of a storage module 42 is set to (1) through an OR circuit 27, an input to an AND gate 25 is set to (1) through an AND circuit 16 and an OR circuit 19, and then ANDed with the output 119 of a decoder 21 to hold the output 124 of the AND gate 25 at (1), so that the terminal S of a storage module 44 also goes up to (1).
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56080178A JPS57195397A (en) | 1981-05-28 | 1981-05-28 | Locally doubled storage device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56080178A JPS57195397A (en) | 1981-05-28 | 1981-05-28 | Locally doubled storage device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57195397A true JPS57195397A (en) | 1982-12-01 |
JPS6235704B2 JPS6235704B2 (en) | 1987-08-03 |
Family
ID=13711094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56080178A Granted JPS57195397A (en) | 1981-05-28 | 1981-05-28 | Locally doubled storage device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57195397A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5134619A (en) * | 1990-04-06 | 1992-07-28 | Sf2 Corporation | Failure-tolerant mass storage system |
US5140592A (en) * | 1990-03-02 | 1992-08-18 | Sf2 Corporation | Disk array system |
US5146574A (en) * | 1989-06-27 | 1992-09-08 | Sf2 Corporation | Method and circuit for programmable selecting a variable sequence of element using write-back |
US5202856A (en) * | 1990-04-05 | 1993-04-13 | Micro Technology, Inc. | Method and apparatus for simultaneous, interleaved access of multiple memories by multiple ports |
US5212785A (en) * | 1990-04-06 | 1993-05-18 | Micro Technology, Inc. | Apparatus and method for controlling data flow between a computer and memory devices |
US5214778A (en) * | 1990-04-06 | 1993-05-25 | Micro Technology, Inc. | Resource management in a multiple resource system |
US5233692A (en) * | 1990-04-06 | 1993-08-03 | Micro Technology, Inc. | Enhanced interface permitting multiple-byte parallel transfers of control information and data on a small computer system interface (SCSI) communication bus and a mass storage system incorporating the enhanced interface |
US5315708A (en) * | 1990-02-28 | 1994-05-24 | Micro Technology, Inc. | Method and apparatus for transferring data through a staging memory |
US5325497A (en) * | 1990-03-29 | 1994-06-28 | Micro Technology, Inc. | Method and apparatus for assigning signatures to identify members of a set of mass of storage devices |
US5388243A (en) * | 1990-03-09 | 1995-02-07 | Mti Technology Corporation | Multi-sort mass storage device announcing its active paths without deactivating its ports in a network architecture |
US5414818A (en) * | 1990-04-06 | 1995-05-09 | Mti Technology Corporation | Method and apparatus for controlling reselection of a bus by overriding a prioritization protocol |
US5461723A (en) * | 1990-04-05 | 1995-10-24 | Mit Technology Corp. | Dual channel data block transfer bus |
US5469453A (en) * | 1990-03-02 | 1995-11-21 | Mti Technology Corporation | Data corrections applicable to redundant arrays of independent disks |
US5956524A (en) * | 1990-04-06 | 1999-09-21 | Micro Technology Inc. | System and method for dynamic alignment of associated portions of a code word from a plurality of asynchronous sources |
JP2009176094A (en) * | 2008-01-25 | 2009-08-06 | Fujitsu Ltd | Transfer device, control method thereof, and information processing apparatus |
-
1981
- 1981-05-28 JP JP56080178A patent/JPS57195397A/en active Granted
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5349686A (en) * | 1989-06-27 | 1994-09-20 | Mti Technology Corporation | Method and circuit for programmably selecting a variable sequence of elements using write-back |
US5146574A (en) * | 1989-06-27 | 1992-09-08 | Sf2 Corporation | Method and circuit for programmable selecting a variable sequence of element using write-back |
US5315708A (en) * | 1990-02-28 | 1994-05-24 | Micro Technology, Inc. | Method and apparatus for transferring data through a staging memory |
US5140592A (en) * | 1990-03-02 | 1992-08-18 | Sf2 Corporation | Disk array system |
US5469453A (en) * | 1990-03-02 | 1995-11-21 | Mti Technology Corporation | Data corrections applicable to redundant arrays of independent disks |
US5388243A (en) * | 1990-03-09 | 1995-02-07 | Mti Technology Corporation | Multi-sort mass storage device announcing its active paths without deactivating its ports in a network architecture |
US5325497A (en) * | 1990-03-29 | 1994-06-28 | Micro Technology, Inc. | Method and apparatus for assigning signatures to identify members of a set of mass of storage devices |
US5202856A (en) * | 1990-04-05 | 1993-04-13 | Micro Technology, Inc. | Method and apparatus for simultaneous, interleaved access of multiple memories by multiple ports |
US5461723A (en) * | 1990-04-05 | 1995-10-24 | Mit Technology Corp. | Dual channel data block transfer bus |
US5212785A (en) * | 1990-04-06 | 1993-05-18 | Micro Technology, Inc. | Apparatus and method for controlling data flow between a computer and memory devices |
US5361347A (en) * | 1990-04-06 | 1994-11-01 | Mti Technology Corporation | Resource management in a multiple resource system where each resource includes an availability state stored in a memory of the resource |
US5233692A (en) * | 1990-04-06 | 1993-08-03 | Micro Technology, Inc. | Enhanced interface permitting multiple-byte parallel transfers of control information and data on a small computer system interface (SCSI) communication bus and a mass storage system incorporating the enhanced interface |
US5414818A (en) * | 1990-04-06 | 1995-05-09 | Mti Technology Corporation | Method and apparatus for controlling reselection of a bus by overriding a prioritization protocol |
US5454085A (en) * | 1990-04-06 | 1995-09-26 | Mti Technology Corporation | Method and apparatus for an enhanced computer system interface |
US5214778A (en) * | 1990-04-06 | 1993-05-25 | Micro Technology, Inc. | Resource management in a multiple resource system |
US5134619A (en) * | 1990-04-06 | 1992-07-28 | Sf2 Corporation | Failure-tolerant mass storage system |
US5956524A (en) * | 1990-04-06 | 1999-09-21 | Micro Technology Inc. | System and method for dynamic alignment of associated portions of a code word from a plurality of asynchronous sources |
JP2009176094A (en) * | 2008-01-25 | 2009-08-06 | Fujitsu Ltd | Transfer device, control method thereof, and information processing apparatus |
US8327197B2 (en) | 2008-01-25 | 2012-12-04 | Fujitsu Limited | Information processing apparatus including transfer device for transferring data |
Also Published As
Publication number | Publication date |
---|---|
JPS6235704B2 (en) | 1987-08-03 |
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