Seagate Barracuda 18LP ST318275LC, Product Manual

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Barracuda 18LP Product Manual, Rev. E vii
List of Figures
Figure 1. Barracuda 18LP family drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Barracuda 18LP family drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3a. Typical Barracuda 18LP family drive +12 V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 3b. Typical Barracuda 18LP family drive +5 V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 3c. DC current and power vs. input/output operations per second for ST318275 drives
(LVD only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 3d. DC current and power vs. input/output operations per second for ST318275 drives
(SE only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 3e. DC current and power vs. input/output operations per second for ST39175 drives
(LVD only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 3f. DC current and power vs. input/output operations per second for ST39175 drives
(SE only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 4. Locations of PCBA components listed in Table 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 5. Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 6a. Mounting configuration dimensions for “LW” model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 6b. Mounting configuration dimensions for “LC” model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 7a. Barracuda 18LP family drive ID select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 7b. Barracuda 18LP family drive ID select header J5 for “LW” model (J5 Pins 1–12) . . . . . . . . . 35
Figure 7c. Barracuda 18LP family drive option select header. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 8. Air flow (suggested) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 9a. Model “LW” drive physical interface (68 pin J1 SCSI I/O connector) . . . . . . . . . . . . . . . . . . . 53
Figure 9b. Model “LC” drive physical interface (80 pin J1 SCSI I/O connector and
DC power connector)53
Figure 10. SCSI daisy chain interface cabling for “LW” model drives . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Figure 11a. Nonshielded 68 pin SCSI device connector used on “LW” models . . . . . . . . . . . . . . . . . . . . 58
Figure 11b. Nonshielded 80 pin SCSI “SCA-2” connector, used on “LC” models . . . . . . . . . . . . . . . . . . . 59
Figure 12. LVD output signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Figure 13. Typical SE-LVD alternative transmitter receiver circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66