Seagate ST15150N/ND/DC, ST15150W/WD/WC manual Wd/Wc/Dc

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Barracuda 4 Installation Guide, Rev. E		15
Characteristics of ST15150 drives
	N/ND	W/WD/WC/DC
SCSI-2 Interface1	Fast	Fast & Wide
Capacity
Unformatted	5,062 Mbytes	5,062 Mbytes
Formatted2	4,294 Mbytes	4,294 Mbytes
Recording
Cylinders (user accessible)	3,711	3,711
Read/Write heads	21	21
Servo heads	1	1
Avg bytes/track	64,160	64,160
Modulation	RLL 1,7 code	RLL 1,7 code
Synchronous SCSI rate
Max burst transfer	10 Mbytes/sec	20 Mbytes/sec
Seek time3
Average read	8.0 msec	8.0 msec
Average write	9.0 msec	9.0 msec
Disc rotation
RPM	7,200	7,200
Average latency	4.17 msec	4.17 msec
Multi-segmented cache
Physical	1,024 Kbytes	1,024 Kbytes
Available to user	977 Kbytes	977 Kbytes

1Can also be operated according to SCSI-1 protocol.

2Standard factory units are formatted as follows:

512data bytes per sector

9spare sectors per cylinder

1cylinder at the inner track reserved for spares

3Not including on-board controller overhead.

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Contents Barracuda 4 Family ST15150N/ND/DC ST15150W/WD/WC Contents Electrostatic discharge protection PrefaceImportant safety information and precautions Page Barracuda 4 Installation Guide, Rev. E Wichtige Sicherheitshinweise Barracuda 4 Installation Guide, Rev. E Page Barracuda 4 Installation Guide, Rev. E Page CompuServe Forum SeaFAX USA 408 438-2620 EnglandSeaBOARD SeaFONE 408SeaTDD 408 Location Number TelephoneGeneral description Barracuda 4 disc drive W/WD WD/WC/DC ND/WD/DC Barracuda 4 Installation Guide, Rev. E From previous General information Drive modelsScsi ID jumpers Scsi bus termination Drive terminationOther applicable jumper options Terminator powerSynchronizing spindles optional Providing adequate cooling Kühlung des Systems Suggested air flow Abbildung 5. Empfohlener Luftstromverlauf Mounting the drive and connecting cables Installation des Laufwerkes und Anschluß der Kabel Dimensions ST15150N/ND Abbildung 6. Laufwerkabmessungen Dimensions ST15150W/WD Abbildung 7. Laufwerkabmessungen Dimensions ST15150WC/DC Abbildung 8. Laufwerkabmessungen Page DC power connector Abbildung 9. Gleichstromanschluß Hinweis Formatting the drive Scsi Setting the Scsi ID jumpersTerminating the drive Terminating the driveDrivesN/ND Scsi Synchronizing spindlesSeveral other jumper options are available as illustrated DrivesW/WD WD drives Power Connector ST15150W/WD Pin DC Power Write Protect option WP Write Protect = On disables writing MTR DrivesWC/DC Connecting remote LEDs Jumper options Barracuda 4 Installation Guide, Rev. E Barracuda 4 Installation Guide, Rev. E