Seagate user manual ST43401N/ND, ST43402ND User’s Manual, Rev. B

ST43401N/ND, ST43402ND User’s Manual, Rev. B			3
Table 1. Drive specifications
Characteristics	Conditions	Specifications
Size	Dimensions	See “Space requirements”
		in Section 2
	Weight (drive only)	3.6 kg (8.0 lb)
Interface	Fast and wide (16-bit) SCSI-2
Recording	Total capacity (unformatted)	3,554,871,600 bytes
	Bytes per track (unformatted)
	Inner track	49,000 bytes
	Outer track	72,800 bytes
	Formatted capacity*
	(256-byte sectors)	2,536,189,440 bytes
	(512-byte sectors)	2,912,484,864 bytes
	(1,024-byte sectors)	3,142,281,216 bytes
	Number of discs	11
	Recording heads	21
	Servo heads	1
	Physical heads per surface	1
	Cylinders per head/disc assy	2,738
	Cylinders available to user	2,735
	Spare cylinders	1 (default/programmable)
	System cylinders	1
	Diagnostic cylinders	1
	Spare sectors per cylinder	9 (default/programmable)
	Modulation	RLL 1,7 code

*Excluding spare sectors, spare cylinders, diagnostic cylinders, and system cylinders.

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