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Chapter 1: System overview.......................................................................................................... 5

Locate the service tag....................................................................................................................................................... 5

MD2412 and MD2424 front view.....................................................................................................................................5

MD2412 and MD2424 back view..................................................................................................................................... 6

MD2412 and MD2424 LEDs.............................................................................................................................................. 6

Front panel LEDs........................................................................................................................................................... 6

2U enclosure drive carrier module LEDs.................................................................................................................. 8

EMM LEDs.......................................................................................................................................................................8

PSU LEDs........................................................................................................................................................................ 9

Chapter 2: Safety precautions..................................................................................................... 10

Installation safety precautions........................................................................................................................................ 10

Power cable connection................................................................................................................................................... 10

Moving fan blade precaution............................................................................................................................................11

Rack system safety............................................................................................................................................................ 11

Chapter 3: Installing the enclosure in the rack............................................................................. 12

Installing rails onto the rack.............................................................................................................................................12

Install the enclosure into the rack..................................................................................................................................13

Attach the bezel................................................................................................................................................................. 14

Chapter 4: Connecting SAS and power cables.............................................................................. 15

Connect SAS cables.......................................................................................................................................................... 15

Connect power cables...................................................................................................................................................... 16

Verify connections............................................................................................................................................................. 17

Chapter 5: Troubleshooting......................................................................................................... 18

Troubleshooting startup failures.................................................................................................................................... 18

Troubleshooting the power supply unit........................................................................................................................ 18

Troubleshooting the EMM............................................................................................................................................... 18

Troubleshooting drives..................................................................................................................................................... 19

Troubleshooting enclosure connections....................................................................................................................... 19

Troubleshooting a damaged enclosure......................................................................................................................... 19

Chapter 6: Replacing components............................................................................................... 20

ESD precautions................................................................................................................................................................ 20

Updating firmware............................................................................................................................................................. 21

Customer replaceable units (CRUs)..............................................................................................................................21

Bezel................................................................................................................................................................................21

SAS Drives.....................................................................................................................................................................22

Power supply unit........................................................................................................................................................ 26

EMM............................................................................................................................................................................... 27

Fans................................................................................................................................................................................ 30

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