Dell PowerVault MD1120 Hardware Owner's Manual page 44

• Disconnecting the cables to the enclosure or EMM while the server is
online
• Powering down the enclosure while the server is online
NOTE:
In a split-mode configuration, these conditions apply to the server that is
directly attached to the affected EMM. In a unified-mode configuration, these
conditions apply when communication is lost to any enclosure in the daisy chain.
Problem
• The PERC 6/E Adapter Ctrl-R utility reports:
– Physical disks and virtual disks as Offline, Degraded, Failed, or Foreign
• Server Administrator Storage Management reports:
– Lost Communication alert(s) to the Server Administrator Alert Log
– The enclosure, physical disks, and virtual disks as Offline, Degraded,
Failed, or Foreign
NOTE:
These messages are logged as a result of a loss of communication and do
not indicate actual hardware component failures.
Action
1 Power down the server.
2 Verify that all storage subsystem cabling between the PERC 6/E Adapter
and all attached enclosures, including daisy-chained enclosures, is properly
connected and secured.
3 Ensure that all the enclosures are powered up.
4 Power up the server.
The PERC 6/E Adapter should recover without any additional user
intervention or warning/error messages.
Problem
• Warning Messages During POST:
– Foreign Configuration
– Failed Virtual Disks
44
Troubleshooting Your Enclosure