I am the President of Coughlin Associates and a storage analyst and consultant. I have over 40 years in the data storage industry with multiple engineering and management positions. I have many publications and six patents to my credit.
In this article we look at recent announcements by Seagate for conventional magnetic recording HDDs with up to 28TB of digital storage capacity. We also look at recent projections by TrendForce that indicate DRAM and NAND prices could begin to rise in the fourth quarter of 2023. All storage and memory devices have experienced significant declines in prices since mid-2022 and positive signs point to the promise of higher storage capacity demand to meet growing needs.
Western Digital introduced 10-disk CMR HDDs with 22TB and SMR HDDs with 26TB in May 2022. The areal density for the CMR product was 1.1Tbpsi. In August of this year the company introduced a 28TB UltraSMR HDD. Extrapolating from the areal density of the 22TB drive the 28TB drive should be about 1.4Tbpsi.The Worst Show On TV Gets One More Shot At Redemption Before It s Gone For Good
These systems use a form data protection called ADATP using an erasure code to reduce the time required to rebuild such large hard disk drives. This is especially important as the size of the HDD capacity increases, since old rebuild methods would take up to a week to rebuild a failed drive. ADAPT allows a drive rebuild in one hour.
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