## About Field-Replaceable Units

FRU means field replaceable unit. For the Sun StorEdge 6920 system, FRUs can be replaced by Sun field engineers or by Sun-trained customer administrators. The following hardware components can be replaced at the customer site:

- Arrays: Power and cooling unit and its battery, the controller card, the loop card, and the disk drive.
- Data Services Platform (DSP): SFC, MIC, SIO, PCMCIA, power supply, fan assembly, GBIC
- Cabinet: power cables, power sequencers, Ethernet hubs, doors, and side panels.
- X-Options:

- Adding and removing array capacity and disk drives
- Adding and removing array controllers
- Adding and removing storage arrays
- Adding cabinets
- Adding, removing, and disabling lights-out management
- Adding and removing an external modem
- Adding and removing storage resource cards (SRCs)

To replace the following components, call Sun Service:

- Array enclosure midplane
- DSP midplane
- Storage Service Processor
- Storage Service Processor accessory tray
- USB relay

For instructions, choose Storage Automated Diagnostic Environment > Service.

The system displays the Service Advisor page. Choose one of the types of FRUs or other options to see the procedures.

### Related Topics

- Using the Service Advisor
- Using FRU Reports