Seagate ST380020A Manual

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U Series Family Product Manual, Rev. B 3 Average seek read (msec typical) 9.9Average seek write(msec typical) 10.9Full-stroke seek time(msec typical)

4 U Series Family Product Manual, Rev. BDrive acousticsSound power in belsIdle modeQuiet SeekPerformance Seek3.0 (typical), 3.3 (max)3.2 (typical), 3.

U Series Family Product Manual, Rev. B 5 1.0 Drive specificationsUnless otherwise noted, all specifications are measured under ambientconditions, at

6 U Series Family Product Manual, Rev. B1.2 Physical organization1.3 Recording and interface technology1.4 Physical characteristicsDrive Model Read

U Series Family Product Manual, Rev. B 7 1.5 Seek timeSeek measurements are taken with nominal power at 25°C ambienttemperature. All times are measur

8 U Series Family Product Manual, Rev. B1.7 Power specificationsThe drive receives DC power (+5V or +12V) through a four-pin standarddrive power conn

U Series Family Product Manual, Rev. B 9 1.7.1.1 Typical current profileFigure 1. Typical startup and operation current profilePower Mode Typical Wa

10 U Series Family Product Manual, Rev. B1.7.2 Conducted noiseInput noise ripple is measured at the host system power supply acrossan equivalent 80-o

U Series Family Product Manual, Rev. B 11 established using a Standby or Idle command. In Standby mode, thedrive buffer is enabled, the heads are park

12 U Series Family Product Manual, Rev. B1.8.3 Humidity1.8.3.1 Relative Humidity1.8.3.2 Wet bulb temperature1.8.4 Altitude1.8.5 ShockAll shock

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U Series Family Product Manual, Rev. B 13 1.8.6.1 Operating vibrationThe following table lists the maximum vibration levels that the drive mayexperi

14 U Series Family Product Manual, Rev. B1.10 Electromagnetic immunityWhen properly installed in a representative host system, the driveoperates with

U Series Family Product Manual, Rev. B 15 1.12.2 Electromagnetic compatibilityHard drives that display the CE mark comply with the European Union(EU)

16 U Series Family Product Manual, Rev. BAustralian C-Tick (N176)If these drives have the C-Tick marking, they comply with the Australia/New Zealand S

U Series Family Product Manual, Rev. B 17 2.0 Configuring and mounting the driveThis section contains the specifications and instructions for configu

18 U Series Family Product Manual, Rev. B2.2 Jumper settings2.2.1 Master/slave configurationThe options jumper block shown in Figure 2 is used to co

U Series Family Product Manual, Rev. B 19 2.2.2 Cable-select optionComputers that use cable-select determine the master and slave drivesby selecting

20 U Series Family Product Manual, Rev. B2.1 Drive mountingYou can mount the drive in any orientation using four screws in the side-mounting holes or

U Series Family Product Manual, Rev. B 21 3.0 ATA interface These drives use the industry-standard ATA task file interface thatsupports 16-bit data t

22 U Series Family Product Manual, Rev. BFigure 4. I/O pins and supported ATA signalsReset–GroundDD7DD8DD6DD9DD5DD10DD4DD11DD3DD12DD2DD13DD1DD14DD0DD1

 2001 Seagate Technology LLC All rights reservedPublication Number: 100129581, Rev. B, July 2001Seagate, Seagate Technology and the Seagate logo are

U Series Family Product Manual, Rev. B 23 3.1.1 Supported ATA commandsThe following table lists ATA-standard commands that the drive sup-ports. For a

24 U Series Family Product Manual, Rev. B3.1.2 Identify Drive commandThe Identify Drive command (command code ECH) transfers informationabout the dri

U Series Family Product Manual, Rev. B 25 Word Description Value0Configuration information:• Bit 15: 0 = ATA; 1 = ATAPI• Bit 7: removable media• Bit 6

26 U Series Family Product Manual, Rev. B50 Device-specific standbytimer value0000H51 PIO data-transfer cycle timing mode 0200H52 Retired 0200H53 Word

U Series Family Product Manual, Rev. B 27 66 Recommended multiword DMA transfer cycle time per word (120 nsec)0078H67 Minimum PIO cycle time without I

28 U Series Family Product Manual, Rev. B92 Master Password Revision codeFFFEH93 Hardware Reset Value (see description following this table)xxxxH94 Au

U Series Family Product Manual, Rev. B 29 3.1.3 Set Features commandThis command controls the implementation of various features that thedrive suppor

30 U Series Family Product Manual, Rev. BNote.At power-on, or after a hardware or software reset, the defaultvalues of the features are as indicated a

U Series Family Product Manual, Rev. B 31 3.1.4 S.M.A.R.T. commandsS.M.A.R.T. provides near-term failure prediction for disc drives. WhenS.M.A.R.T. i

32 U Series Family Product Manual, Rev. B

U Series Family Product Manual, Rev. B iiiContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

U Series Family Product Manual, Rev. B 33

34 U Series Family Product Manual, Rev. BSeagate Technology LLC920 Disc Drive, Scotts Valley, California 95066, USAPublication Number: 100129581, Rev.

iv U Series Family Product Manual, Rev. B1.12.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162.0 Configuring and m

U Series Family Product Manual, Rev. B vFiguresFigure 1. Typical startup and operation current profile . . . . . . . . . . . . 9Figure 2. Master/slave

vi U Series Family Product Manual, Rev. B

U Series Family Product Manual, Rev. B 1 IntroductionThis manual describes the functional, mechanical and interface specifi-cations for the ST380020A,

2 U Series Family Product Manual, Rev. BSpecification summary tableThe specifications listed in this table are for quick reference. For detailson spec