WD 20TB OptiNAND HDDs Now Available for $679.99: 269MB/s Transfer Rates and 4.16ms Latency

Western Digital’s OptiNAND HDDs at the moment are obtainable for buy for a hefty sum of $679.99. Leveraging the OptiNAND know-how in addition to iNAND UFS embedded flash drive (EFD) on the PCB, these drives are primarily based on 3D TLC UFS flash reminiscence. These HDDs pack 9 platters with a single-disk capability of two.2 TBs, and leverage ePMR (Power Assisted Vertical Recording Know-how). The drive heads use a extra correct three-stage drive know-how, permitting a exact positioning of the learn and write heads.

OptiNAND provides a number of benefits to those HDDs. Each RRO knowledge and write operation metadata will be saved in iNAND flash reminiscence, not solely decreasing the disk house occupation but in addition the variety of arduous disk learn and write operations (IO quantity). The UFS flash reminiscence also can retailer sector-level write operation knowledge, which might optimize storage necessities and scale back ATI (adjoining observe interference knowledge) refresh occasions to enhance efficiency. The SoC management chip of the arduous disk is independently developed by Western Digital.

Western Digital’s Ultrastar DC HC560 and WD Gold 20TB HDDs are each rated for workloads of as much as 550TB per 12 months, and provide a five-year guarantee, with a 0.35% failure fee. The drives might be restricted to SATA 3.0, nonetheless. By way of efficiency, Western Digital claims sustained switch charges of as much as 269MB/s and a median latency of 4.16ms. By way of energy consumption, each the 20TB HDDs draw 7W below load and 6W when ultimate, a bit increased than WD’s different HDDs.

As already talked about above, the WD Gold 20TB arduous drive can now be bought instantly for $679.99. That’s considerably dearer than the corporate’s predecessor WD Gold 18TB, which retails for $571.99 however ought to provide higher efficiency and reliability. 

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