Seagate 100516232, ST31000524NS manual Specification summary tables, Drive specifications summary

3.0Drive specifications

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate the following drive models:

ST32000644NS ST31000524NS ST3500514NS

3.1Specification summary tables

The specifications listed in the following tables are for quick reference. For details on specification measure- ment or definition, see the appropriate section of this manual.

Table 1: Drive specifications summary

Drive specification	ST32000644NS	ST31000524NS	ST3500514NS
Formatted (512 bytes/sector)*	2TB	1TB	500GB
Guaranteed sectors	3,907,029,168	1,953,525,168	976,773,168
Heads	8	4	2
Discs	4	2	1
Bytes per sector	512
Default sectors per track	63
Default read/write heads	16
Default cylinders	16,383
Recording density, KBPI (Kb/in max)	1421
Track density, KTPI (ktracks/in avg.)	240
Areal density, (Gb/in2 avg)	347
Spindle speed (RPM)	7200
Internal data transfer rate	1300
(Mb/s max)
Sustained data transfer rate OD	140
(MB/s max)
I/O data-transfer rate	300
(MB/s max)
ATA data-transfer modes supported	PIO modes 0–4
	Multiword DMA modes 0–2
	Ultra DMA modes 0–6
Cache buffer	64MB	32MB
Weight: (maximum)	710g (1.565 lb)	640g (1.411 lb)	610g (1.345 lb)
Average latency	4.16ms
Power-on to ready (sec max)	15	10	7
Standby to ready (sec max)	15	10	7

4 Constellation ES Serial ATA Product Manual, Rev. G