Product manual

Barracuda 9 Product Manual, Rev. C vii
List of Figures
Figure 1. Barracuda 9 disc drive (ST19171N drive shown). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Barracuda 9 family drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Typical Barracuda 9 drive +5 V and +12 V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 4a. Location of PCB components listed in Table 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 4b. Location of PCB components listed in Table 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 5. Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 6. Mounting configuration dimensions for “N” models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 7. Mounting configuration dimensions for “W” and “WD” models. . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 8. Mounting configuration dimensions for “WC” and “DC” models. . . . . . . . . . . . . . . . . . . . . . . 32
Figure 9. ST19171N option select jumper connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 10. ST19171W/WD option select jumper connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 11. ST19171WC/DC option select jumper connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 12. Suggested air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 13. Physical interface for “N” model drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 14. Physical interface for “W” and “WD” model drives (68-pin J1 SCSI I/O connector) . . . . . . . . 54
Figure 15. Physical interface for “WC” and “DC” model drives (80-pin J1 SCSI I/O and
DC power connector) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Figure 16. SCSI daisy-chain interface cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Figure 17. Non-shielded 50-pin SCSI device connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Figure 18. Non-shielded 68-pin SCSI device connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Figure 19. Non-shielded 80-pin SCSI connector, used on “WC” model . . . . . . . . . . . . . . . . . . . . . . . . . 62
Figure 20. Single-ended transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Figure 21. Typical differential I/O line transmitter/receiver and terminators . . . . . . . . . . . . . . . . . . . . . . 71