20% Slowness as compare to MongoDB

Hi,

We have SQL SERVER 2008 R2 in production and we are working on evaluating the NoSQL database performance between MongoDB and CouchBase. We have same setup for Mongo and CouchBase server.
• We are not getting at least the same performance with CouchBase as we got with MongoDB. CouchBase is 20% slower that MongoDB. Reading through all the available white paper we noticed that CouchBase is much faster than MongoDB.
• The migration (150 GB of data) from SQL Server to CouchBase is very very slow using C# code using Jason format. Migration in MongoDB took 6 hours but in CouchBase it took 3 days.
• CouchBase server is taking 84 GB of space in one bucket to store 150GB of data (SQL Server) but MongoDB took 16 GB.

Below are the configurations.

SAN – 500 GB
RAM – 20 GB
OS – Windows Server 2008 R2 (64 bit)

It will be great if someone from CouchBase technical team assist us.