Service
Service
Backplane Assembly
SCSI Bus Reset Switch
CAUTION! Changing the default factory settings on the SCSI bus reset switch may cause operating system conflicts for the host computer. The switch is covered with a label that states “Factory Set Only”.
NOTE! A SCSI reset is a high priority interrupt. The SCSI bus reset option is used when the host controller or software requires a SCSI reset to be sent as notification of device removal or power shutdown.
The default setting for the SCSI bus reset switch is all switch segments enabled. The switch is enabled when the host controller or software requires a SCSI reset to be sent as notification of disk removal or power shutdown.
The SCSI bus reset switch is visible on the rackmount rear panel (see Figure 36, item 1). To locate the switch on the deskside rear panel, remove the two T15 screws (see Figure 37, item 2), then remove the rear panel (see Figure 37, item 3) to expose the switch (see Figure 37, item 1). Figure 38 shows the switch segments on the SCSI bus reset switch and Table 23 shows the switch functions.
NOTE! Even when bus A and bus B are connected to form one bus, the SCSI bus reset switches function independently.
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