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4-6 RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide
Compaq Confidential – Need to Know Required
Writer: Bob Young Project: RAID Array 3000 Pedestal Storage Subsystem Hardware User’s Guide Comments:
Part Number: EK-SMCPO-UG. C01 File Name: e-ch4 Expansion Pedestal Option.doc Last Saved On: 12/4/00 1:49 PM
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.