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Western Digital's Utrastar DC HC650 20TB is based on the company's nine-disc Helium sealed enterprise-class platform, which has a 7200 rpm spindle speed and provides SATA 6Gbps or SAS 12Gbps interfaces based on SKU. As the product is not expected to go on sale immediately, the manufacturer has not yet released all the specifications, but has said that key customers have placed orders.
Utrastar DC HC650 20TB hard disk has about 2.2GB ultra-high performance, providing higher sequential read performance than its predecessors, but the IOPS performance per TB is lower than that of the old hard disk. That is to say, Western data customers using 20 TB SMR HDD will need to manage the physical limitations of SMR by maximizing sequential writes.
The 20 TB version of Ultrastar DC HC650 SMR hard drive will provide samples to customers by the end of this year, and shipment will begin as soon as the hard drive meets customer requirements. Since the hard drive is for specific customers only, Western Digital will not announce the pricing of each hard drive.