Barracuda 18LP Family: ST39175LW/LC ST318275LW ... - Seagate
Barracuda 18LP Family: ST39175LW/LC ST318275LW ... - Seagate
Barracuda 18LP Family: ST39175LW/LC ST318275LW ... - Seagate
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>Barracuda</strong> <strong>18LP</strong> Product Manual, Rev. E<br />
vii<br />
List of Figures<br />
Figure 1. <strong>Barracuda</strong> <strong>18LP</strong> family drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1<br />
Figure 2. <strong>Barracuda</strong> <strong>18LP</strong> family drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6<br />
Figure 3a. Typical <strong>Barracuda</strong> <strong>18LP</strong> family drive +12 V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . 20<br />
Figure 3b. Typical <strong>Barracuda</strong> <strong>18LP</strong> family drive +5 V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . 21<br />
Figure 3c. DC current and power vs. input/output operations per second for ST318275 drives<br />
(LVD only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22<br />
Figure 3d. DC current and power vs. input/output operations per second for ST318275 drives<br />
(SE only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22<br />
Figure 3e. DC current and power vs. input/output operations per second for ST39175 drives<br />
(LVD only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23<br />
Figure 3f. DC current and power vs. input/output operations per second for ST39175 drives<br />
(SE only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23<br />
Figure 4. Locations of PCBA components listed in Table 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25<br />
Figure 5. Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27<br />
Figure 6a. Mounting configuration dimensions for “LW” model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29<br />
Figure 6b. Mounting configuration dimensions for “<strong>LC</strong>” model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30<br />
Figure 7a. <strong>Barracuda</strong> <strong>18LP</strong> family drive ID select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34<br />
Figure 7b. <strong>Barracuda</strong> <strong>18LP</strong> family drive ID select header J5 for “LW” model (J5 Pins 1–12) . . . . . . . . . 35<br />
Figure 7c. <strong>Barracuda</strong> <strong>18LP</strong> family drive option select header. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36<br />
Figure 8. Air flow (suggested) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38<br />
Figure 9a. Model “LW” drive physical interface (68 pin J1 SCSI I/O connector) . . . . . . . . . . . . . . . . . . . 53<br />
Figure 9b. Model “<strong>LC</strong>” drive physical interface (80 pin J1 SCSI I/O connector and<br />
DC power connector)53<br />
Figure 10. SCSI daisy chain interface cabling for “LW” model drives . . . . . . . . . . . . . . . . . . . . . . . . . . . 57<br />
Figure 11a. Nonshielded 68 pin SCSI device connector used on “LW” models . . . . . . . . . . . . . . . . . . . . 58<br />
Figure 11b. Nonshielded 80 pin SCSI “SCA-2” connector, used on “<strong>LC</strong>” models . . . . . . . . . . . . . . . . . . . 59<br />
Figure 12. LVD output signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66<br />
Figure 13. Typical SE-LVD alternative transmitter receiver circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Change language