Hitachi HDS728080PLAT20 Specifications - Page 25
Drive characteristics - ata device
UPC - 829686000094
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4.0 Drive characteristics 4.1 Default logical drive parameters Table 1: Formatted capacities HDS728040PLAT20 HDS728080PLAT20 Physical Layout Label capacity (GB) 40 80 Bytes per sector 512 512 Sectors per track 567-1170 567-1170 Number of heads 1 2 Number of disks 1 1 Data sectors per cylinder 567-1170 1134-2340 Data cylinders per zone 1444-4501 1444-4501 Logical layout1 Number of heads 16 16 Number of Sectors per track 63 63 Number of Cylinders2 16,383 16,383 Number of sectors 80,418,240 160,836,480 Total logical data bytes 41,174,138,880 82,348,277,760 Notes: 1. Number of cylinders: For drives with capacities greater than 8.45 GB the Identify Device information word 01 limits the number of cylinders to 16, 383 per the ATA specification. 2. Logical layout: Logical layout is an imaginary drive parameter (that is, the number of heads) which is used to access the drive from the system interface. The logical layout to Physical layout (that is, the actual Head and Sectors ) translation is done automatically in the drive. The default setting can be obtained by issuing an IDENTIFY DEVICE command. Deskstar 7K80 Hard Disk Drive Specification 21