I am going to be building out four data centers and need to purchase a SAN for each one. The approximate size of each SAN will be approximately 12 - 15TB of usable space. I have familiarity with the HP EVA's but I'm not sure if they are up for this task. I am interested in knowing your opinions regarding SAN's. Which equipment should I use? I'm not only interested in dependability, I am also in need of quality phone and onsite support. Any recommendations anyone could provide would be greatly appreciated.