Unfortunately, the Atmos protocol does not have a bulk delete operation, so the EsuApi interface does not implement it.

Your best bet to quickly delete would be to do it in a parallel block.  EsuApi is thread-safe, so you don't need to worry about synchronization.

e.g.

Parallel.ForEach(ids, id=> esu.DeleteObject(id));

Thanks for your reply, one more thing that I want to learn about EMC is transaction, does it support transaction ?

No, due to the distributed nature of Atmos, there is no support for transactions.