The HP 72.8GB 10K Ultra320 SCSI Hot Swappable Hard Drive is a high-capacity server hard drive designed for use in servers. With a storage capacity of 72.8GB this hard drive offers fast and reliable performance. The Ultra320 SCSI interface ensures efficient data transfer, while the 8MB cache provides additional storage performance. The hot swap feature allows for easy replacement of the drive without having to shut down the system, ensuring minimal downtime and maximum availability for your storage needs. Perfect for businesses and server applications requiring high-capacity, high-performance storage solutions.ships free the day you pay. full refund if you need it. price is for 1 hard drive.