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Transferring data: Difference between revisions
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===Rsync=== | ===Rsync=== | ||
[https://en.wikipedia.org/wiki/Rsync Rsync] is a popular tool for ensuring that two separate datasets are the same but can be quite slow there are a lot of files or there is a lot of latency between the two sites, i.e. they are geographically apart or on different networks. Running rsync will check the modification time and size of each file, and will only transmit the file if one or the other does not match. If you expect modification times not to match on the two systems you can use the "-c" option which will compute checksums at the source and destination, and transfer only if the checksums do not match. | [https://en.wikipedia.org/wiki/Rsync Rsync] is a popular tool for ensuring that two separate datasets are the same but can be quite slow if there are a lot of files or there is a lot of latency between the two sites, i.e. they are geographically apart or on different networks. Running rsync will check the modification time and size of each file, and will only transmit the file if one or the other does not match. If you expect modification times not to match on the two systems you can use the "-c" option which will compute checksums at the source and destination, and transfer only if the checksums do not match. | ||
===Using checksums to check if files match=== | ===Using checksums to check if files match=== | ||