Remote data facility over an IP network
First Claim
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1. In a remote data mirroring arrangement of data storage systems, a method of operating a data storage system comprises:
- determining that storage traffic is to be transferred between the data storage system and a remote data storage system to which the data storage system is coupled by an IP network in accordance with a remote data service application;
using an interface between the remote data service application and a TCP/IP protocols software layer to form a connection to the IP network, wherein the interface is split across two processors, with a first interface portion residing on a first processor and a second interface portion residing on a second processor; and
enabling transfer of the storage traffic between the data storage system and the remote data storage system over the IP network using the connection to the IP network.
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Abstract
A data storage system capable of performing remote data services (e.g., data mirroring) over an IP network using native connections to the IP network is described. The data storage system employs an architecture that manages the remote data services and the native connections to the IP network in a way that isolates the remote data services application software from the TCP/IP and lower level network processing.
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Citations
9 Claims
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1. In a remote data mirroring arrangement of data storage systems, a method of operating a data storage system comprises:
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determining that storage traffic is to be transferred between the data storage system and a remote data storage system to which the data storage system is coupled by an IP network in accordance with a remote data service application; using an interface between the remote data service application and a TCP/IP protocols software layer to form a connection to the IP network, wherein the interface is split across two processors, with a first interface portion residing on a first processor and a second interface portion residing on a second processor; and enabling transfer of the storage traffic between the data storage system and the remote data storage system over the IP network using the connection to the IP network. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer program product residing on a computer-readable medium for operating a data storage system in a remote data mirroring arrangement of data storage systems, the computer program product comprising instructions causing a computer to:
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determine that storage traffic is to be transferred between the data storage system and a remote data storage system to which the data storage system is coupled by an IP network in accordance with a remote data service application; use an interface between the remote data service application and a TCP/IP protocols software layer to form a connection to the IP network, wherein the interface is split across two processors, with a first interface portion residing on a first processor and a second interface portion residing on a second processor; and enable transfer of the storage traffic between the data storage system and the remote data storage system over the IP network using the connection to the IP network.
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9. A data storage system for use in a remote data mirroring arrangement of data storage systems comprising:
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one or more storage devices; a controller coupled to the one or more storage devices; and wherein the controller is configured to determine that storage traffic is to be transferred between the data storage system and a remote data storage system to which the data storage system is coupled by an IP network in accordance with a remote data service application, use an interface between the remote data service application and a TCP/IP protocols software layer to form a connection to the IP network, and enable transfer of the storage traffic between the data storage system and the remote data storage system over the IP network using the connection to the IP network, wherein the interface is split across two processors, with a first interface portion residing on a first processor and a second interface portion residing on a second processor.
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Specification