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Are there any Windows ramdisk drivers that can periodically back up the ramdisk to a file? I am familiar with ones that can save the file on demand and on shutdown.
I'd like to gain control over the performance/risk tradeoff and for instance set up the system so that it would be unlikely that I would lose more than 5 minutes of work.
(I know I could periodically just sync the files, but performance would probably be better if the ramdisk were backed up into a single-file memory image.)