Serial ATA 7-pin connector8ms Average seek timeUp to 7200rpm performanceSpindle speed is 7200rpmBuffer size is 256MB cacheWarranty: 5 Years This is the 512e Format Secure Erase version of the UltraStar He12 with SATA 6Gb/s connectivity. The 12TB Ultrastar He12 3.5' Helium Platform Enterprise Hard Drive is designed to handle workloads up to 550TB per year, is the industry’s first 12TB drive and uses PMR technology to make it drop-in ready for any enterprise-capacity application or environment. The stable internal environment created by fourth-generation HelioSeal technology enables an 8-disk design, increasing the capacity by 20 percent when compared to the 7-disk design of the prior generation. This highest capacity helium drive offers the lowest power profile in the industry to help data center architects meet eco-environmental goals and requirements. Targeted at 2.5M hours MTBF, the Ultrastar He12 provides the highest reliability rating available of all hard driveson the market today by building on the successful design of its predecessors.