Data storage system and storage managing method
First Claim
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1. A data storage system for coupling to a host system, the data storage system comprising:
- (a) a storage unit for storing data having a first interface for coupling to the host system and having a second interface which is different and independent from the first interface;
(b) a storage manager that manages the storage unit having a first interface for coupling to the host system to communicate with the host system and a second interface coupled to the second interface of the storage unit for communicating with the storage unit;
wherein the storage unit includes a plurality of storage enclosures to store data and a storage control unit to control the plurality of storage enclosures, each storage enclosure of the plurality of storage enclosures being coupled to the storage manager through the second interface of the storage unit, and the storage control unit being coupled to the first interface of the storage unit.
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Abstract
Embodiments of the present invention provide a data storage system that reduces a load of a data bus for connecting a HOST system with the data storage system. The data storage system includes a disk manager connected to the HOST system by a SCSI BUS, connected to a disk control unit by an RS PORT and connected to disk enclosures and a fan unit by a Serial BUS. The disk manager monitors operation of the disk control unit and disk enclosures and transmits results to the HOST system. In addition, control commands of the HOST system to the disk enclosures are executed via the disk manager.
115 Citations
22 Claims
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1. A data storage system for coupling to a host system, the data storage system comprising:
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(a) a storage unit for storing data having a first interface for coupling to the host system and having a second interface which is different and independent from the first interface; (b) a storage manager that manages the storage unit having a first interface for coupling to the host system to communicate with the host system and a second interface coupled to the second interface of the storage unit for communicating with the storage unit; wherein the storage unit includes a plurality of storage enclosures to store data and a storage control unit to control the plurality of storage enclosures, each storage enclosure of the plurality of storage enclosures being coupled to the storage manager through the second interface of the storage unit, and the storage control unit being coupled to the first interface of the storage unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A storage managing method of a system having a host system coupled to a data storage system, the data storage system having a storage unit and a storage manager, the method comprising the steps of:
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(a) transferring data between the storage unit and the host system through a first communication path coupled to the storage unit, the storage manager and the host system; (b) transferring managing information between the storage manager and the host system through the first communication path; (c) monitoring and controlling operation of the storage unit by the storage manager through a second communication path coupled to the storage unit and the storage manager, the second communication path being different and independent from the first communication path; wherein the storage unit has a plurality of storage enclosures and wherein the step of monitoring and controlling operation of the storage unit further includes step of communicating with each of the plurality of storage enclosures through the second communication path and collecting information from each of the storage enclosures. - View Dependent Claims (21)
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22. A data storage system for providing data storage for a host system, the data storage system comprising:
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a storage unit that stores data of the host system; a storage manager that monitors and controls data storage in the storage unit; first means for transferring data between the host system, the storage unit and the storage manager; second means for transferring data between the storage unit and the storage manager, the data transferred by the second means being related to management information of the storage unit; and third means for transferring data between the storage manager and the storage unit, the data transferred by the third means being related to status and control information of the storage unit; wherein each of the first means, the second means, and the third means transfers data independent from, and without interfering with data transmission on, each of the other of the first means, the second means and the third means.
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Specification