Question : clustered windows or  load balancing service

how could i resolve this issue:

my server reached to the hdd limits and all my algorithmas is based on working one server how could i add another server's hdd as a new directory under my website as uploaded files ?

Answer : clustered windows or  load balancing service

With that much data, you should be looking at a scalable SAN or iSCSI solution. You can scale it out as large as you want. You should talk to a storage specialist at the hardware vendor of your choice. They can help you choose a system that meets your current needs and can grow to meet your future needs.

JJ