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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.
Having some concern is one thing, thinking of doing intensive disk procedures is a whole 'nother story. I mean.. It's just a cold shutdown. Anyway, if you're copying some data for the first time and a cold shutdown happens, there's nowhere to run on any filesystem. The data would be obviously gone. I never had a single issue after some cold shutdown and I have a script that periodically checks its health. On COW filesystems, the data is presented on the disk just once, even if you copy it, for example. On further manipulation of that data, that change it's written in one or more unused blocks, and the original data remains unchanged. If some unexpected shutdown strikes, for example, the original data will be safe where it was before.