for your consideration -  DELL E2K-UCP-61 Perc 6/i Dual Channel Pci-e Integrated Sas Raid Controller- 30 DAY RETURNS 

Perc 6/i Dual Channel Pci-express Integrated Sas Raid Controller For Poweredge 2950 2970 1950 (no Battery & Cable)

Part Number: E2k-ucp-61
Manufacturer: Dell

Technical Information :

• Device Type : Storage Controller (raid) - Plug-in Card
• Interface Type : Pci-express
• Interface Support : 3gb/s Sas
• Supported Devices : Disk Array (raid)
• Channel Qty : 2
• Max Drive Support : 16
• Raid Level : Raid 0, Raid 1, Raid 5, Raid 6, Raid 10, Raid 50, Raid 60
• Sas Connections : 2x4 Internal
• Compatible Slots : 1 X Pci Express
• Pci Support : Pci-e 1.0