it’s equivalent to backing up a server after a hard power off. as long as the filesystem supports some kind of journaling (aka it’s not ancient) and the databa

it’s equivalent to backing up a server after a hard power off. as long as the filesystem supports some kind of journaling (aka it’s not ancient) and the database is acid compliant, there shouldn’t be any major issues beyond a slow startup. but keep in mind that you may lose acid compliance by fiddling with the disk flushing configuration, which is a common trick to raise write speed on write choked databases. if that’s the case you may lose some transactions your database documentation should have this information.