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

Enclosure configurations...................................................................................................................................................... 5

Upgrading to dual-controller configuration.................................................................................................................. 6

Enclosure management........................................................................................................................................................ 6

Operation................................................................................................................................................................................ 6

Attach or remove the 2U enclosure front bezel.......................................................................................................... 8

Enclosure variants................................................................................................................................................................. 9

2U enclosure core product................................................................................................................................................. 10

2U enclosure front panel............................................................................................................................................... 10

2U enclosure rear panel..................................................................................................................................................11

5U84 enclosure core product............................................................................................................................................. 14

5U84 enclosure front panel...........................................................................................................................................14

5U84 enclosure rear panel............................................................................................................................................ 15

5U84 enclosure chassis.......................................................................................................................................................18

5U84 enclosure drawers................................................................................................................................................18

Operator's (Ops) panel LEDs............................................................................................................................................. 19

2U enclosure Ops panel.................................................................................................................................................19

5U enclosure Ops panel................................................................................................................................................20

Controller modules......................................................................................................................................................... 21

CompactFlash...................................................................................................................................................................... 26

Supercapacitor pack......................................................................................................................................................27

Controller failure when a single-controller is operational................................................................................................27

Transporting cache........................................................................................................................................................27

2 Troubleshooting and problem solving........................................................................................... 28

Overview.............................................................................................................................................................................. 28

Fault isolation methodology................................................................................................................................................28

Fault isolation methodology basic steps..................................................................................................................... 28

Options available for performing basic steps............................................................................................................. 28

Performing basic steps................................................................................................................................................. 29

LEDs...................................................................................................................................................................................... 30

2U enclosure LEDs......................................................................................................................................................... 31

5U84 enclosure LEDs....................................................................................................................................................33

Troubleshooting 2U enclosures......................................................................................................................................... 35

PCM faults......................................................................................................................................................................36

Thermal monitoring and control...................................................................................................................................36

Thermal alarm.................................................................................................................................................................37

Troubleshooting 5U enclosures......................................................................................................................................... 37

Thermal considerations................................................................................................................................................. 38

CLI port connections.....................................................................................................................................................38

Temperature sensors.......................................................................................................................................................... 38

Host I/O................................................................................................................................................................................38

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