Hello SantanuDas,   Yes you can connect the Icy Box to the eSATA port. The array will be configured with the Icy Box and present to your OS as a single volume.
Hi there, Is it possible to attach an external RAID enclosure to the R210 II's eSata port, so that it comes as a single drive to system? I cannot think of why not but Has anyone tried that before? I'm thinking of ordering Icy Box IB-RD3640SU3 (couldn't find anything else suitable in UK) for that purpose, but wanted to make sure it works (or tried before) rather ordering and returning if it doesn't. Just make it clear: I don't wanna use the disks separately in the enclosure, like when you use a RAID controller. Is there any known limitation on the said eSata port? I'll be using 4x2TB drive in RAID-5 configuration on Ubuntu. -S    
R210 II - eSata external RAID enclosure