Seagate Elite 9 Installation Manual page 29

Elite 9 Installation Guide, Rev. B
Figure 9 illustrates a typical synchronized spindle
configuration.
After connecting each drive with spindle sync cables,
you must designate a master spindle sync reference
source. This master source is normally a disc drive
located on the same SCSI bus as the other drives you
want to synchronize with. To designate a drive as the
master, use SCSI interface commands. Refer to the
Product Manual for information about using these
commands.
Master Sync
Source
Host
(or other drive)
System
Interface
Figure 9. Spindle sync diagram
Sync Interface
J4A
24
Spindle
Control
23
+5V
R T
Drive 1
J4A
24
Spindle
Control
23
+5V
R T
Drive 2
J4A
24
Spindle
Control
23
+5V
R T
Drive n
27