Specifications

Chapter 5 Maintenance and Service 5-11
5.2.2 Interconnect Cables
■ Host SCSI cables
Stop all I/O activities to the corresponding data path before replacing a host SCSI
cable.
■ SCSI cables
See Section 6.1 in the Sun StorEdge A3500/A3500FC Controller Module Guide for
further details.
■ Fiber-optic cables
See Section 6.2 in the Sun StorEdge A3500/A3500FC Controller Module Guide for
further details.
■ Controller module terminators
Stop all I/O activities to the corresponding controller module before replacing a
controller module terminator.
■ Drive side SCSI cables
You should stop all I/O activities to the controller module and power down the
controller module before replacing the drive side SCSI cables. If the failure caused
a disk tray to lose communication to the controllers, you will need to power cycle
the controller module to re-establish communication with the disk tray.
5.2.3 Power Cords
■ Power cords from the power sequencer to the device trays
See Section 7.2 in the Sun StorEdge A3500/A3500FC Controller Module Guide for
further details. You will need to power down the entire rack to perform this
operation. You will need to remove the bottom disk tray to gain access to the
power sequencer outlets. Further, you will need to remove the rack side panel to
perform this service.
■ Power cords from the power sequencer to the AC source.
See Section 5.3 in the Sun StorEdge Expansion Cabinet Installation and Service
Manual for further details.
5.2.4 Power Sequencer
See Section 5.4 in the Sun StorEdge Expansion Cabinet Installation and Service Manual
for further details. You will need to power off the entire rack to replace a power
sequencer. Be sure each AC cords are plugged back to its original outlet position.