E F 3 0 1 5 S e t u p G u i d e ( R e v A )
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5
Troubleshooting
5.1
USB CLI port connection
The EF3015 controllers feature a CLI port employing a mini-USB Type B form factor. If you
encounter problems communicating with the port after cabling your computer to the USB
device, you may need to either download a device driver (Windows), or set appropriate
parameters via an operating system command (Linux). See Appendix D for more
information.
5.2
Fault isolation methodology
The EF3015 storage systems provide many ways to isolate faults. This section presents the
basic methodology used to locate faults within a storage system, and to identify the pertinent
FRUs (Field Replaceable Units) affected.
The basic fault isolation steps are:
• Gather fault information, including using system LEDs
• Determine where in the system the fault is occurring
• Review event logs
• If required, isolate the fault to a data path component or configuration
Cabling systems to enable use of the licensed AssuredRemote feature — to replicate
volumes — is another important fault isolation consideration pertaining to initial system
installation. See
5.7 "Isolating AssuredRemote replication faults"
for more
information.
5.2.1
Gather fault information
When a fault occurs, it is important to gather as much information as possible. Doing so will
help you determine the correct action needed to remedy the fault.
Begin by reviewing the reported fault:
• Is the fault related to an internal data path or an external data path?
• Is the fault related to a hardware component such as a drive module, controller module,
or power supply?
By isolating the fault to
one
of the components within the storage system, you will be able
to determine the necessary corrective action more quickly.
