The PERC6/E RAID controller card from Dell comes with 256 MB of integrated DDR2 cache for quick storage. This PERC6/E SAS is an integrated PCIe based card that supports internal storage. It offers connectivity via dual 4 port external wide connectors. The card offers support for RAID levels 0/1/5/6/10/50/60 storage strategies. The card offers support for up to a maximum of 32 physical drives per array. This product has been tested and validated on Dell systems.