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2. Track (disk drive) - Wikipedia

   en.wikipedia.org/wiki/Track_(disk_drive)

   A disk drive track is a circular path on the surface of a disk or diskette on which information is magnetically recorded and from which recorded information is read. A track is a physical division of data in a disk drive, as used in the Cylinder-Head-Record (CCHHR) addressing mode of a CKD disk .

3. Disk sector - Wikipedia

   en.wikipedia.org/wiki/Disk_sector

   In computer disk storage, a sector is a subdivision of a track on a magnetic disk or optical disc. For most disks, each sector stores a fixed amount of user-accessible data, traditionally 512 bytes for hard disk drives (HDDs), and 2048 bytes for CD-ROMs, DVD-ROMs and BD-ROMs. [1]

4. Cylinder-head-sector - Wikipedia

   en.wikipedia.org/wiki/Cylinder-head-sector

   Cylinder, head, and sector of a hard drive. Cylinder-head-sector (CHS) is an early method for giving addresses to each physical block of data on a hard disk drive. It is a 3D-coordinate system made out of a vertical coordinate head, a horizontal (or radial) coordinate cylinder, and an angular coordinate sector. Head selects a circular surface ...

5. Zone bit recording - Wikipedia

   en.wikipedia.org/wiki/Zone_bit_recording

   This permits the drive to have more bits stored in the outside tracks compared to the inner ones. Storing more bits per track equates to achieving a higher total data capacity on the same disk area. [2] However, ZBR influences other performance characteristics of the hard disk. In the outermost tracks, data will have the highest data transfer ...

6. Shingled magnetic recording - Wikipedia

   en.wikipedia.org/wiki/Shingled_magnetic_recording

   Shingled magnetic recording (SMR) is a magnetic storage data recording technology used in hard disk drives (HDDs) to increase storage density and overall per-drive storage capacity. [1] Conventional hard disk drives record data by writing non-overlapping concentric magnetic tracks (conventional magnetic recording, Perpendicular recording ...

7. Magnetic storage - Wikipedia

   en.wikipedia.org/wiki/Magnetic_storage

   Both have many parallel tracks across the width of the media and the read/write heads take time to switch between tracks and to scan within tracks. Different spots on the storage media take different amounts of time to access. For a hard disk this time is typically less than 10 ms, but tapes might take as much as 100 s. [citation needed]