Contents

1 About the Dell Storage MD1280 Service Guide...............................................5

Dell Storage MD1280 overview.............................................................................................................5
Dell Storage MD1280 hardware......................................................................................................5
Dell Storage MD1280 monitoring...................................................................................................5
Front-panel features and indicators.....................................................................................................5
Back-panel features and indicators......................................................................................................7
I/O EMM features and indicators....................................................................................................8
Fan module features and indicators...............................................................................................9
PSU features and indicators .........................................................................................................10
DDIC indicator.....................................................................................................................................11

2 Replacing Dell Storage MD1280 components..............................................13

Safety precautions...............................................................................................................................13
Electrical safety precautions..........................................................................................................13
General safety precautions ...........................................................................................................13
Electrostatic discharge precautions .............................................................................................14
Pre-replacement tasks........................................................................................................................14
Turning off the EMMs and enclosure............................................................................................14
Replacing PSUs....................................................................................................................................14
Identifying the failed PSU..............................................................................................................14
Replacing a PSU.............................................................................................................................14
Replacing fan modules .......................................................................................................................16
Identifying the failed fan module..................................................................................................16
Replacing a fan module.................................................................................................................16
Replacing hard drives..........................................................................................................................17
Numbering the hard drive ............................................................................................................17
Identifying the failed hard drive....................................................................................................18
Replacing hard drives....................................................................................................................18
Replacing I/O EMM modules..............................................................................................................21
Identifying the failed EMM............................................................................................................22
Replacing an EMM.........................................................................................................................22
Replacing chassis................................................................................................................................23
Replacing rack rails.............................................................................................................................23
Post-replacement tasks .....................................................................................................................24
Turning on the EMMs and enclosure...........................................................................................24

3 Troubleshooting Dell Storage MD1280 components..................................25

Troubleshooting fan modules............................................................................................................25
3