Joined: 14 Mar 2007 Posts: 8657 Location: Back in jolly old England
In response to your PM.
You need to contact the vendors to see what they have on offer
IBM, STORAGETEK, HDS, EMC
Each different manufacturer offers different things, and at different prices.
Do you want RAID1, RAID5, RAID6. What cache size do you want for VS and NVS. FASTWRITE or NOFASTWRITE. What internal response time do you need. How much capacity is required. How much redundancy do you need.
So many questions that only the manufacturers can answer for you when you let them know your requirements. Doing an RFP is not just about contacting vendors, but contacting them with highly specific information such as the examples above.