Method and device for writing in and reading out data and virtual tape library device
A technology of data writing and data reading, which is applied in the direction of input/output to record carrier, redundancy in operation, data error detection, generation of response error, etc., which can solve the problems of increasing networking costs and high backup costs , to reduce backup costs, simplify networking, and reduce costs
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[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0037] figure 1 It is a schematic diagram of the data backup network architecture applicable to the embodiment of the present invention, wherein the dotted line indicates the flow of data during the data backup process. Specifically, such as figure 1 As shown, several application servers 1 transmit the data to be backed up to the backup server 2; the backup server 2 transmits the data through Fiber Channel / Internet Protocol Storage Area Network (FC / IP SAN) For VTL3; during the data backup process, disk 4 is inserted into the corresponding disk slot in VTL3, and VTL3 writes th...
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