Compaq EK-SMCPO-UG. C01 manual Reconfiguring Base Pedestal UltraSCSI Bus

4-6RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide

Reconfiguring Base Pedestal UltraSCSI

Bus

WARNING: Only qualified service personnel should reconfigure the base pedestal. Dangerous voltages are present within the subsystem. To prevent electrical shock, always turn the subsystem off and disconnect the power cords before removing the side panel.

The RAID Array 3000 base pedestal is factory-configured for split-bus operation. You must reconfigure the bus in the base subsystem from split-bus to a through-bus configuration prior to connecting the expansion cabinet to the base subsystem. The components needed to reconfigure the split-bus in the base subsystem are included with your pedestal expansion kit option.

WARNING: To prevent electrostatic discharge (ESD) from damaging the controller, always wear an ESD wrist strap connected to a suitable ground whenever you handle any of the electronic components.

Perform the following procedure to reconfigure the SCSI bus in the base pedestal from a split-bus to a through-bus configuration:

1.Perform an inventory of the bus conversion items supplied with the pedestal expansion kit option. The items should consist of:

■SCSI bus jumper cable 17-04166-03

■SCSI cable 17-04454-01

2.Quiesce the host bus by shutting down the host system.

CAUTION: To allow the UPS to supply power while the cache is being flushed to disk, do not unplug the base pedestal from the UPS.

3.Unplug the base power cord from the wall outlet.

4.Unplug the UPS power cord from the wall outlet. The UPS will now signal the controller to flush the cache.

5.Wait until the UPS shuts down completely (this may take several minutes).

6.Power off the base pedestal and plug the UPS into the wall outlet.