Seagate ST940813AM Specifications for 20 Gbyte models, Drive specification ST920813AM ST920814AM

Page 12

Table 2:

Specifications for 20 Gbyte models

 

 

 

 

 

 

Drive specification

ST920813AM

 

ST920814AM

(OEM)

 

(Aftermarket)

 

 

 

 

 

 

 

Formatted (512 bytes/sector)*

20 Gbytes

 

 

 

 

 

Guaranteed sectors

39,070,080

 

 

 

 

 

 

Bytes per sector

512

 

 

 

 

 

 

Physical read/write heads

1

 

 

 

 

 

 

 

Discs

 

1

 

 

 

 

 

 

Cache

 

8 Mbytes

 

 

 

 

Recording density, BPI

540.1k bits/inch at ID

 

 

 

 

Track density. TPI

119k tracks/inch at ID

 

 

 

 

 

Areal density

 

64.3 Gbits/inch2 at ID

 

Spindle speed

 

5,400 RPM

 

 

 

 

Internal data transfer rate

321.1 Mbits/sec max

 

 

 

 

I/O data transfer rate

100 Mbytes/sec

 

 

 

ATA data-transfer modes supported

PIO modes 0–4; Multiword DMA modes 0–2; Ultra DMA modes 0–5

 

 

 

Height

 

9.5 +/-0.2 mm (0.374 +/-.008 inches)

 

 

 

Width

 

69.85 +/-0.25 mm (2.750 +/-0.010 inches)

 

 

 

Length

 

100.2 +/-0.25 mm (3.945 +/-0.010 inches)

 

 

 

Weight

 

100 grams (0.22 lb) (typical)

 

 

 

Average latency

5.6 msecs

 

 

 

 

 

Power-on to ready

 

 

 

-20 to 85°C)

3.0 seconds (typical)

 

-30 to -20°C

15 seconds (typical)

 

3 sigma maximum at extreme temperature

30 seconds

 

 

 

 

 

Standby to ready

 

 

 

-20 to 85°C

 

3.0 seconds (typical)

 

-30 to -20°C

15 seconds (typical)

 

3 sigma maximum at extreme temperature

30 seconds

 

 

 

Track-to-track seek time

1.0 msec (read, typical), 1.5 msec (write, typical)

 

 

 

Average seek time

12.5 msec (typical)

 

 

 

 

Average seek, read

12.5 msec (typical)

 

 

 

 

Average seek, write

14.5 msec (typical)

 

 

 

Full-stroke seek

22 msec (typical); 24 msec (max)

 

 

 

Startup current 5V

1.1 amps (typical)

 

 

 

 

Seek power

 

1.90 watts / 0.38 amps (typical)

 

 

 

Read power

 

1.90 watts / 0.38 amps (typical)

 

 

 

Write power

 

1.70 watts / 0.34 amps (typical)

 

 

 

Idle mode

 

0.99 watts / 0.20 amps (typical)

 

 

 

Standby mode

 

0.26 watts / 0.05 amps (typical)***

 

 

 

Sleep mode

 

0.26 watts / 0.05 amps (typical)***

 

 

 

Voltage tolerance (including noise)

5V ± 5%

 

 

 

 

 

Ambient temperature

 

 

 

Operating

 

-30° to 85°C (OEM); -20° to 75°C (aftermarket);

Nonoperating

–40° to 95°C (OEM and aftermarket)

 

 

Temperature gradient

3°C per minute, noncondensing (operating)

 

 

3°C per minutes, max, noncondensing (nonoperating)

 

 

 

Relative humidity (noncondensing)

5% to 90% (operating)

 

 

 

5% to 95% (nonoperating)

 

 

 

Relative humidity gradient

30% per hour max

 

 

 

 

 

 

6

EE25 Series Product Manual, Rev. E

Page 11 Page 13
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Page 11 Page 13
Contents EE25 Series Page Contents EE25 Series Product Manual, Rev. E List of Figures EE25 Series Product Manual, Rev. E Introduction EE25 Series Product Manual, Rev. E Drive specifications Specification summarySpecifications for 40 and 30 Gbyte models AftermarketVibration, nonoperating Specifications for 20 Gbyte models Drive specification ST920813AM ST920814AMEE25 Series Product Manual, Rev. E Default logical geometry LBA modeFormatted capacity Physical organizationPhysical characteristics Technology SpecificationRecording and interface technology Seek timeRead seek times vs temperature 85C 25C 20C 30C Start/stop timesMsec Typical Max 85C 25C 20C 30CPower specifications Typical current profile Conducted noiseVoltage tolerance Power-management modes Active modeIdle mode Sleep modeEnvironmental specifications AltitudeShock Operating shockNonoperating shock Acoustic mode Idle Normal Seek Performance Seek AcousticsVibration Operating vibrationMeasurement type Specification Electromagnetic immunityReliability Test Description Performance Reference Level StandardAgency certification Environmental protection Corrosive environmentEuropean Union Restriction of Hazardous Substances RoHS Page Configuring and mounting the drive Handling and static discharge precautionsJumper settings Master/slave configurationDrive mounting Cable-select optionATA interface signals and connector pins Signal Name Connector Cable Contact ConductorCable Connector Signal Name Conductor Contact ATA interfaceSupported ATA commands Command name Command code in hex ATA-standard commandsCommand name Command code in hex ATA-standard power-management commandsATA-standard security commands Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordSet Features command 0CHEE25 Series Product Manual, Rev. E Seagate Technology support services InternetPresales Support Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index NumericsPage Page EE25 Series Product Manual, Rev. E Page Seagate Technology LLC
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