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Seagate announced that it could successfully develop a 6.9TB capacity HDD dish prototype per disc in the lab, which numbers more than double the hard disks it now sells and makes it possible to push the hard disk capacity up to 55TB to 69TB.
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The company revealed that despite the technology being ready in the lab, the 6.9TB dish will not be in practical use until 2030, the period before which a new version of the dish will be gradually used, namely 4TB in 2027, followed by 5TB in 2028 and 6TB in 2029.
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From 2031 onwards, 7TB to 15TB dishes are expected. This means that by 2040, we may see hundreds of TB of HDDs, or even PB, if there are no technological and cost barriers in the way.
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The centerpiece of this leap is still that laser-based HAMR technology allows data to be written more densely than ever. Currently, a 30TB capacity HAMR HDD uses 10 3TB dishes, but if switched to a 6.9TB dish, the total capacity will increase more than 2 times in the same size drive. Seagate also uses the Mozaic 3 + technique to make magnetic media pellets smaller, enhancing data density without degrading stability.
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Although SSDs continue to grow and become more popular on private devices, in the Data Center world, HDDs are still needed to capture long-term data at a much more cost-effective cost per capacity, suited to cold storage that can last many years without being overwritten, and support the huge volume of data from AI work that is increasing so fast that HDD orders lag for two years.
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Seagate's successful creation of the 6.9TB dish is a clear sign that HDD is not out of the future, and there is still a long way to go. Despite how fast SSDs are moving, in an age of non-stop data growth, the world still needs high-capacity hard disks to support large-scale data acquisition tasks, and HAMR's progress has helped push HDD forward for decades to come.
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Source: techpowerup



















































































