Storage device and method for data sharing
First Claim
1. A storage system coupled to a first computer and a second computer, comprising:
- a first interface according to count key data (CKD) for receiving first data from the first computer;
a plurality of disk devices for storing the first data; and
a second interface according to a fixed block architecture for receiving a request for the first data from the second computer and sending second data having the first data to the second computer, wherein the request includes location information designating a location of the first data in the disk devices, and wherein the location information was sent from the first computer to the second computer.
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Abstract
In a computer system including a disk subsystem having channel interface compatible to a count-key-data format and a SCSI interface compatible to a fixed length data format, the disk subsystem is connected to a CPU controlled by an open system operating system through the SCSI interface, and connected to an other CPU controlled by a main frame operating system through the channel interface. The CPU is provided with a CKD record access library and a VSAM access library which accesses in a FBA format the VSAM record stored by the other CPU in a CKD format in the disk subsystem and allows the access by an application program of the CPU as a VSAM record based on VSAM control information.
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Citations
15 Claims
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1. A storage system coupled to a first computer and a second computer, comprising:
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a first interface according to count key data (CKD) for receiving first data from the first computer;
a plurality of disk devices for storing the first data; and
a second interface according to a fixed block architecture for receiving a request for the first data from the second computer and sending second data having the first data to the second computer, wherein the request includes location information designating a location of the first data in the disk devices, and wherein the location information was sent from the first computer to the second computer. - View Dependent Claims (8, 9)
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2. A storage system for a use with an open system computer and a mainframe computer, comprising:
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a first interface according to count key data (CKD) for receiving first data from the mainframe computer;
a disk device for storing the first data; and
a second interface according to a fixed block architecture for receiving a request for the first data from the open system computer, and sending second data having the first data to the open system computer, wherein the second data is identified as track data by the mainframe computer, wherein the request for the first data includes location information of the first data in the disk device, and wherein the location information was sent from the mainframe computer to the open system computer. - View Dependent Claims (3, 4, 5, 6, 7)
wherein the second data is stored on a plurality of blocks in the disk device. -
7. A storage system according to claim 3, wherein the disk device is a SCSI device.
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10. A computer system comprising:
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a first computer;
a second computer; and
a storage system coupled to said first computer and said second computer, wherein said storage system comprises;
a first interface according to count key data (CKD) for receiving first data from said first computer, a storage device for storing the first data, and a second interface according to a fixed block architecture for receiving a request for the first data from the second computer and sending second data having the first data to the second computer, and wherein the request includes location information of the first data in the storage device that was sent from said first computer to said second computer. - View Dependent Claims (11, 12)
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13. A computer system comprising:
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a first program executed in a first computer;
a second program executed in a second computer; and
a storage system coupled to said first computer and said second computer, wherein said storage system comprises;
a first interface according to count key data (CKD) for receiving first data from the first computer, a storage device for storing the first data, and a second interface according to a fixed block architecture for receiving a request for the first data from the second computer and sending second data having the first data to the second computer, wherein the request includes location information of the first data in the storage device that was sent from the first program to the second program. - View Dependent Claims (14, 15)
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Specification