Physical organization, Drive specification | Seagate ST980825AS

2.4Physical organization

Drive model	Read/write heads	Number of discs

ST910021AS	4	2

ST980825AS	4	2

ST96023AS	3	2

ST94015AS	2	1

2.5Recording and interface technology

Interface	Serial ATA (SATA)

Recording method	16/17 EPRML

Recording density BPI (bits/inch max)	700,000

Track density TPI (tracks/inch max)	114,000

Areal density (Mbits/inch2 max)	81
Spindle speed (RPM) (± 0.2%)	7,200

Maximum Internal transfer rate (Mbits/sec)	539

Sustained transfer rate OD (Mbytes/sec max)	45.8

I/O data-transfer rate (Mbytes/sec max)	150 (SATA 1.0)

Interleave	1:1

Cache buffer	8 Mbytes (8,192 kbytes)

2.6Physical characteristics

Drive specification

Height	(mm)	9.5 +/-0.2
	(inches)	0.374	+/-0.0078

Width	(mm)	69.85	+/-0.25
	(inches)	2.75	+/-0.0098

Length	(mm)	100.5+/-1.6
	(inches)	3.957	+/- 0.063

Typical weight	(grams)	115 grams
	(pounds)	(0.254 lb)

6	Momentus 7200.1 SATA Product Manual, Rev. B

Image 12

Seagate ST980825AS, ST96023AS manual Physical organization, Recording and interface technology, Physical characteristics

Contents

Momentus 7200.1 Sata ST910021AS ST980825AS ST96023AS ST94015ASPage Contents Momentus 7200.1 Sata Product Manual, Rev. B List of Figures Page Introduction About the Serial ATA Sata interface Drive specifications Specification summary table Track-to-track seek time msec typical Default logical geometry LBA modeFormatted capacity Cylinders Read/write heads Sectors per track 16,383 Physical characteristics Drive specificationPhysical organization Recording and interface technology Seek time Start/stop timesTypical seek times Typical seek times msec Read Write Power specifications Typical current profiles Deferred spinupAdditional details Power-management modes Power management modesActive mode Idle mode Environmental specifications Shock Operating shockNonoperating shock Vibration Acoustics Electromagnetic immunityDrive level acoustics Radio frequency environments Safety certification Measurement type SpecificationReliability Agency certification Korean RRL Australian C-Tick N176FCC verification Environmental protection European Union Restriction of Hazardous Substances RoHS Corrosive environment Momentus 7200.1 Sata Product Manual, Rev. B Configuring and mounting the drive Handling and static-discharge precautions Configuring the drive Serial ATA cables and connectors Mounting dimensions-top, side and end view Drive mounting Momentus 7200.1 Sata Product Manual, Rev. B Serial ATA connector pin definitions SignalSerial ATA Sata interface Segment Pin Function Definition Pin Function Definition P10 Ground 2nd mate P11 Reserved Supported ATA commands Command name Command code in hex ATA-standard commands Command name Command code in hex ATA-standard power-management commands Momentus 7200.1 Sata Product Manual, Rev. B Identify Device command Word Description Value Xx07H Description if bit is set to Bit Word Bit Word Set Features command Set Features command values 3 S.M.A.R.T. commands A.R.T. commandsCode in features register A.R.T. command Seagate Technology support services InternetPresales Support Technical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index ITE Sata Momentus 7200.1 Sata Product Manual, Rev. B Page Seagate Technology LLC