Hi @UCG4J2DNU I've not yet heard of anyone attempting to get encryption-at-rest working with Rocks or LMDB in the context of working with Crux, but it seems there are already some encryption capabilities within Rocks: https://github.com/facebook/rocksdb/pull/2424 (which gets a mention in this blog: https://www.cockroachlabs.com/blog/cockroachdb-on-rocksd/) But there's also an active PR for Rocks to have a more comprehensive solution, which sounds particularly exciting: https://github.com/facebook/rocksdb/pull/7020 Filesystem encryption with LUKS etc. should work, though probably far less efficiently. We've not tested it 🙂

Thanks. The last PR does look interesting.