ThinkServer always meets the demand on performance enhancement and feature enablement by continuous improvement on products and options. Upgrading your systems with the new options will bring you great values with flexibility, scalability, field-proven reliability. The offering here covers: Lenovo ThinkServer RAID 500 RAID 5 Upgrade(4XC0G88835) Lenovo ThinkServer Gen 5 RAID500 PCIe Adapter(4XC0G88834) Lenovo ThinkServer Gen 5 RAID710 PCIe Adapter(4XC0G88836) Lenovo ThinkServer RAID 510i AnyRAID Adapter(4XC0G88837) Lenovo ThinkServer RAID 720i AnyRAID Adapter(4XC0G88838) Lenovo ThinkServer RAID 720ix AnyRAID Adapter with Expander(4XC0G88839)Dedicated ROC (RAID on Chip) supporting 12 GB SATA, SAS and SSD RAID 0/1/10/5/50/6/60 Support up to 32 disks Optional 1 GB cache Optional 1 GB/2 GB/4 GB flash and Super capacitor