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Exploring Advanced Format Hard Drive Technology

February 26th, 2010 02:49 admin Leave a comment Go to comments

MojoKid writes “Hard drive capacities are sometimes broken down by the number of platters and the size of each. The first 1TB drives, for example, used five 200GB platters; current-generation 1TB drives use two 500GB platters. These values, however, only refer to the accessible storage capacity, not the total size of the platter itself. Invisible to the end-user, additional capacity is used to store positional information and for ECC. The latest Advanced Format hard drive technology changes a hard drive’s sector size from 512 bytes to 4096K. This allows the ECC data to be stored more efficiently. Advanced Format drives emulate a 512 byte sector size, to keep backwards compatibility intact, by mapping eight logical 512 byte sectors to a single physical sector. Unfortunately, this creates a problem for Windows XP users. The good news is, Western Digital has already solved the problem and this quick overview at HotHardware offers some insight into the technology and how it performs.”

Source: Exploring Advanced Format Hard Drive Technology

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