4.7 Troubleshooting Enclosure Management Modules (EMM)
Caution: Dell recommends that you turn off the host server before turning off the enclosure to prevent
loss of data.
1. If the EMM status LED is solid or blinking amber (two or four times per sequence), perform the
following troubleshooting steps:
a. Turn off the server.
b. Remove the EMM and verify that the pins on backplane and EMM are not bent.
For information about removing an EMM, see
Dell PowerVault MD1200 & MD1220 Hardware
Owner’s Manual
at Dell.com/powervaultmanuals.
c. Reinstall the EMM and wait for 30 seconds.
For information about installing an EMM, see
Dell PowerVault MD1200 & MD1220 Hardware
Owner’s Manual
at Dell.com/powervaultmanuals.
d. Turn on the server.
e. Check the EMM status LED.
f. If the problem is not resolved, see Getting Help.
2. If EMM status LED is blinking amber (five times per sequence), update the firmware to the latest
supported firmware on both the EMMs.
3. If the link status LEDs are not green, perform the following steps:
a. Turn off the server.
b. Reseat the cables on the storage enclosure and the server.
c. Restart the storage enclosure and wait until enclosure is fully booted.
d. Turn on the server.
e. Check the link status LED. If the link status LED is not green, proceed to the next step.
f. Replace the cables.
g. If the problem is not resolved, see Getting Help.
4.8 Enclosure Connections Problem
1. Verify that the EMM port link status LED and the EMM status LED are solid green for each port that
is connected to a cable.
If the LEDs are not solid green, see Enclosure Management Module topic in
Dell PowerVault
MD1200 & MD1220 Hardware Owner’s Manual
at Dell.com/powervaultmanuals.
2. Ensure that all the cables are attached correctly according to the enclosure mode you selected.
For more information about enclosure modes, see Operating Your Storage Enclosure topic in
Dell
PowerVault MD1200 & MD1220 Hardware Owner’s Manual
at Dell.com/powervaultmanuals.
3. If you reseated cables, restart the host server.
Note: You must turn off the host server before reseating the cables on the enclosure.
If the problem is not resolved, see Getting Help.
28 Upgrading PowerEdge VRTX to Support Shared Storage Expansion
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