this week I have same feeling that my setup not o over 290TB every time I get to 289+ go some deletes and it go down. I think it is not a problem of setup itself. because I have 107 nodes, with different places, connections /24 IPs. May be we got data that deleted more often last week before i got around +5tb so I dont worry very much. takes time, it is always HARD in the begginning.