User manual MAXTOR ST39173 INSTALLATION

[. . . ] · · · ·· · ·· · · ·· · · ·· · · ·· · ·· · · ·· · · Barracuda 9LP · · · ·· · ·· · · ·· · · ·· · · ·· · ·· · · ·· · · Disc Drive · · · ·· · ·· · · ·· · · ·· · · ·· · ·· · · ·· · · ST39173N/W/WD/LW/WC/LC · · · ·· · ·· · · ·· · · ·· · · ·· · ·· · · ·· · · ST34573N/W/WD/LW/WC/LC · · · ·· · ·· · · ·· · · ·· · · ·· · ·· · · ·· · · Installation Guide · · · ·· · ·· · · ·· · · ·· · · ·· · ·· · · ·· · · Contents Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Electrostatic discharge protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Important safety information and precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Wichtige Sicherheitshinweise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Regulatory agency compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Seagate Technology support services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] It is recommended that the devices be uniformly spaced between terminators with the end devices located as close as possible to the terminators. [3] Values specified by data rate shall apply even if a slower data rate is negotiated. 26 Barracuda 9LP Installation Guide, Rev. Cable characteristics for differential I/O circuits Maximum distance between terminators (meters) [1] [3] Interconnect Fast-5 Fast-10 Fast-20 Fast-40 Point-to-point interconnect (2 devices) Daisy-chain interconnect (up to 16 devices) 25 25 25 25 25 25 25 [2] 12 [4] [1] For environments where all elements of the bus (cables, device interfaces, environmental noise and other parameters) are controlled to be better than minimally required, it may be possible to extend the path length and device count. [2] SCSI devices shall be within a stub length of the termination (. 1 meter). [3] Values specified by data rate shall apply even if a slower data rate is negotiated. [4] Low voltage differential (LVD) devices only ("LW" models). Twisted pair cable should be used with differential transceivers. Barracuda 9LP Installation Guide, Rev. E 27 Figure 3a. Fifty pin I/O connection to drive Figure 3b. Sixty-eight pin connection to drive 28 "N" Model Drive Barracuda 9LP Installation Guide, Rev. E SCSI ID X (or last drive) [1] Additional SCSI devices SCSI ID 1 Pin 1 (check your adapter for Pin 1 location) SCSI ID 7 SCSI ID 0 Host Adapter PCB [1] "X" means up to 6 or the maximum allowable number of devices on the SCSI bus. See Table 4a and system documentation. Figure 3c. Multiple drive connection to host adapter Barracuda 9LP Installation Guide, Rev. E "W" Model Drive "LW" or "WD" Model Drive [1] 29 SCSI ID X (or last drive) [2] Additional SCSI devices [3] SCSI ID 1 Pin 1 (check your adapter for Pin 1 location) SCSI ID 7 SCSI ID 0 Host Adapter PCB [1] Do not mix "W, " "WD, " and "LW" model drives on the daisy chain. However, an "LW" drive may operate on a "W" bus if the drive operates only in the single-ended I/O transmission mode. Install the "LVD" jumper shown in Figure 16 to force single-ended I/O operation. The external terminator [3] will be required on the "LW" drive if it is the last drive or only drive on the I/O daisy chain. [2] "X" means up to 15 or the maximum allowable number of devices on the SCSI bus. Multiple-drive connection to host adapter 30 Barracuda 9LP Installation Guide, Rev. This drive model plugs directly into a backplane connector and therefore uses no cables. Drive model "WC" or "LC" with single 80-pin I/O and power connector Barracuda 9LP Installation Guide, Rev. E 31 Providing adequate cooling The enclosure design must ensure adequate cooling for the drive. The maximum ambient air temperature around the drive should not exceed 50°C. However, to achieve maximum reliability, the ambient temperature should be about 15°C below this value most of the time. [. . . ] J6 Drive Front J2 Pin 1 DC Power Connector (default) (default) [1] See Figure 16 for this jumper position option for "LW" drives. Figure 15. Additional jumper options for "W, " "WD, " and "LW" drives Barracuda 9LP Installation Guide, Rev. E 51 LW drives Pin 1 J2 L RR V D MW P E E T DSEPDSSP A jumper here forces single-ended I/O operation. No jumper allows host to select either single-ended or LVD operation. [. . . ]