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Rsnapshot
a tool for backing up your data using rsync (if you want to get help, use https://lists.sourceforge.net/lists/listinfo/rsnapshot-discuss)
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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kplvms
Discontinued Keep LVM safe: Backup, Block copy or rsync lvm volumes with advanced options. You can optimize every aspect of the script and theres a benchmarking function to find the best bytesize for performing raw operations.
This is what rsnapshot does.
There's also https://github.com/Stonyx/RSyncSnapshot which doesnt need all the pearl installation. I've created a project which is what I use at my costumers for the backup sollution (live backups - live LVM snapshot for rsync or dd) I've included a benchmark tool designed to find the best bs= with the real copy scenario...). My backups are 20x faster now then with other sollutions.
Check it out: https://github.com/gcblauth/kplvms if you have the time :)