To solve the problem of increasing data density on the platters hard drive manufacturers in the near future are going through the use of media with the so-called tiled structure . At the very least, Seagate, and Hitachi have adopted this technology, which will by next year by 25% increase the data recording density.
However, in the longer term, manufacturers will be forced to adopt the technology of recording media with local heating by a laser beam (HAMR), and the first samples of the relevant Seagate drives with TDK will demonstrate this week at CEATEC Japan 2013.
According to Seagate, HAMR technology will raise the theoretical limit of the recording density on the platters up to 500 terabits per square inch, which will allow in 2020 to create hard disk capacity of 20 terabytes. Note that in the following year will be released 5 terabytes of storage capacity. According to Seagate, would take the amount of not more than 400 terabytes, and could accommodate only 20 hard drives that use HAMR technology . In addition to the heating medium with a laser beam, followed by cooling after completion of recording, Seagate intends to use arrays of magnetic particles of iron and platinum. First HAMR technology must be run on serial drives form factor 2.5 "with a spindle speed of 10,000 r / min.