The HDE9E00DAA51 is a refurbished Dell 600GB hard drive. However, based on the search results, it seems that there might be some confusion or variation in the model number. The closest match found is the Dell W347K, which is a 600GB 15K RPM SAS 3.5-inch hard drive. It operates at a speed of 15000 RPM and utilizes the SAS 6Gb/s interface. The hard drive features a 32MB cache and is designed for enterprise-class performance and reliability. It is compatible with Dell PowerEdge servers and comes in a 3.5-inch tray.