The E-2800 and E5700 have built-in storage to storage replication for full capacity! By that it meant; customers do not need to worry about DRS. All of the E-Series models offer all RIAD types, 1, 10, 5, 6, etc; so you will get more flexibility to create RAID groups based on your application requirements. The other thing is that it is almost plug-and-play; it is a good friend for storage support engineers. Secondly, at the same time, it is very simple to create RGs, Volumes, and host mappings; so for customers, it is also simple and easy to perform storage admin-related tasks.