I just made it public so I can't tell much about traffic/requests/load, time would tell.
Currently block_log with index takes ~7GB of storage space, shared_memory.bin that takes ~26GB. To avoid performance issues it is advised to keep that file on fast storage (i.e. SSD or any other low-latency storage).
Memory usage (RSS) is around 19GB-25GB.
BTW, interesting to read: The Real Blockchain Scalability Challenge
Awesome, thanks for replying.
Going to have a read through that soon :)