Make sure that the network connection to the storage management
station is functional.
Make sure that the controllers are installed and that the
power to the storage array is turned on. Correct any existing problems
before continuing.
If you have an in-band storage array, use the following
procedure. Click Refresh after each step to
check the results:
Make sure that the Host Context Agent software is installed
and running. If you started the host before the host was connected
to the controllers in the storage array, the Host Context Agent software
is not able to find the controllers. If so, make sure that the connections
are tight, and restart the Host Context Agent software.
Make sure that the network can access the host by using
the ping command in the following syntax: ping
<host-name-or-IP-address-of-the-host>
If the network can access the host, continue to step c. If the
network cannot access the host, skip to step d.
Remove the host with the unresponsive status from the
MD Storage Manager, and add that host again.
If the host returns to optimal status, you have completed this
procedure.
Make sure that the power to the host is turned on and
that the host is operational.
If applicable, make sure that the host bus adapters
have been installed in the host.
Examine all external cables and switches or hubs to
make sure that you cannot see any damage and that they are tightly
connected.
If you have recently replaced or added the controller,
restart the Host Context Agent software so that the new controller
is found.
If a problem exists, make the appropriate modifications to the
host.
If you have an out-of-band storage array, use the following
procedure. Click Refresh after each step to
make sure of the results:
Make sure that the network can access the controllers
by using the ping command. Use the following syntax: ping <controller-IP-address>
If the network can access the controllers, continue to step
b. If the network cannot access the controllers, skip to step c.
Remove the storage array with the unresponsive status
from MD Storage Manager, and add that storage array again.
If the storage array returns to optimal status, you have completed
this procedure.
Make sure that you cannot
see any damage and that they are tightly connected by examining the Ethernet cables.
Make sure that the applicable network configuration
tasks have been done—for example, the IP addresses have been assigned to each controller.
Make sure that the controller firmware is compatible with
MD Storage Manager on your management station. If the controller firmware
was upgraded, the MD Storage Manager may not have access to the storage
array. A new version of MD Storage Manager may be needed to manage
the storage array with the new version of the controller firmware.
Look to see if there is too much network traffic to one
or more controllers. This problem corrects itself because the MD Storage
Manager tries to re-establish communication with the controllers in
the storage array at regular times. If the storage array was unresponsive
and a subsequent attempt to connect to the storage array succeeds,
the storage array becomes responsive.
For an out-of-band storage array, look to see if management
operations are taking place on the storage array from other storage
management stations. The type of management operations being done
and the number of management sessions taking place together establish
the number of TCP/IP connections made to a controller. When the maximum
number of TCP/IP connections have been made, the controller stops
responding. This problem corrects itself because after some TCP/IP
connections are complete, the controller becomes responsive to other
connection tries.
If the storage array is still unresponsive, problems may
exist with the controllers.