What can cause drastic traffic jump on server?

srgb asked:

In the last couple of days, between 3AM and 4AM my server traffic jumps tenfold, from 20MB to 200MB.

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I’ve checked the access log, and while there is significant googlebot activity, the difference is not so drastic in the mentioned period compared to other periods of the day. I couldn’t find anything else in the access log that would indicate a problem.
I also checked sendmail log and nothing there either.

I will now sweep the access log for singular URLs that might have caused this, but in the mean time, were else can I check? What can I do to hunt this down?

Thanks

My answer:


That has all the hallmarks of a nightly backup.


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