The Spinpoint F4 features 7200rpm speed rotation, advanced areal density technology and a SATA 3.0 Gbps interface.
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Based on these results and observations, a model of glacier evolution is proposed, involving an adjustment phase, thinning phase, areal-retreat phase, and fragmentation phase.
While the growth in HDD areal density has declined in recent years the industry continues to make progress in designing and producing higher capacity HDDs.
Current HDDs ship with about 730 Gbpsi maximum areal density.
Providing this storage capacity with HDDs and with slower areal density growth than in the past will require more HDD components and a major investment in HDD component capital equipment.
Note that the actual percentage annual growth in areal density has declined from near 100% per year in the early part of the last decade to about 30% annually today.
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Due to the complexity and cost of the next big technology transitions for HDDs the market is likely to see areal density growth in the range of about 25% annually for the next several years.
With HDD areal density growth at about 20-25% annually, down from 40% and higher in past years, manufacturers are looking for ways to increase the storage capacity that they can supply the ever growing digital storage needs of customers.
For at least the next few years, until new technologies are introduced that will boost annual areal density growth to 40% or higher, we can expect to see a trend towards more disks and heads on average in HDDs.
With industry-wide challenges in scaling current areal density technologies, this new platform allows HGST to design seven-platter drives in a standard 3.5-inch form factor that will cost-effectively extend the capacity and cost-per-gigabyte curve for many product generations to come.
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Figure 2 in the accompanying power point file shows historical storage areal density (AD) growth for HDDs (this is directly related to the amount of digital storage that can be put on a disk in a hard disk drive) from Q1 2000 through Q1 2011.
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