Dell PowerVault MD3220 - Manual (Page 244)

244 Troubleshooting: Your Storage Array Software
22 Determine if there is an excessive amount of network traffic to one or
more RAID controller modules.
This problem is self-correcting because the EMW software periodically
retries to establish communication with the RAID controller modules in
the storage array. If the storage array was unresponsive and a subsequent
try to connect to the storage array succeeds, the storage array becomes
responsive.
For an out-of-band managed storage array, determine if management
operations are taking place on the storage array from other storage
management stations. A RAID controller module-determined limit exists
to the number of Transmission Control Protocol/Internet Protocol
(TCP/IP) connections that can be made to the RAID controller module
before it stops responding to subsequent connection attempts. The type of
management operations being performed and the number of management
sessions taking place together determine the number of TCP/IP
connections made to a RAID controller module. This problem is self-
correcting because, after some TCP/IP connections terminate, the RAID
controller module then becomes responsive to other connection attempts.
23 If the storage array is still unresponsive, a problem may exists with the
RAID controller modules. Contact your Technical Support representative.
Locating a Physical Disk
You can use the Locate Physical Disk option to physically locate and identify
one or more of the physical disks in an expansion enclosure by activating
physical disk LEDs.
To locate the physical disk:
1 Select the Physical tab.
2 Select the physical disks that you want to locate.
3 Select Physical Disk Blink Physical Disk.
The LEDs on the selected physical disks blink.
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