I'll fill in the missing

Yeah, we tried direct connection, also adjusted -par values and added a large -dbcache. Somehow on cpu usage it's only using one of the cores on xeon (out of at 100%
Memory usage is steady at 4gb, there is 6gb available for datacoin.
This server runs only datacoind and no other processes. Steady 2-3kb network traffic that bounces to zero on each block. (we run all blade servers, so for datacoin i slided in a new blade just for this purpose)

Progess so far now showing that we are getting there, but awful slow ...
{
    "version" : "v0.8.6.0-dirty",
    "protocolversion" : 70001,
    "walletversion" : 60000,
    "balance" : 0.00000000,
    "blocks" : 2181451,
    "moneysupply" : 28860906.00783475,
    "timeoffset" : -1,
    "connections" : 7,
    "proxy" : "",
    "testnet" : false,
    "keypoololdest" : 1516758393,
    "keypoolsize" : 101,
    "paytxfee" : 0.00000000,
    "errors" : ""
}