This MAP applies to all system models. Be sure that you
know which model you are using before you start this procedure. To determine which model
you are working with, look for the label that identifies the model type on the front of
the node.
You might be sent here for one of the following reasons:
The fix procedures sent you here
A problem occurred during the installation of the
system
Another MAP sent you here
A user observed a problem that was not detected by the system
System
nodes are configured in pairs. While you service one node, you can access all the storage managed by
the pair from the other node. With concurrent maintenance, you can remove, replace, and test all
FRUs on one system while the SAN and host systems are powered on and doing productive work.
Notes:
Unless you have a particular reason, do not remove the power from both nodes unless instructed
to do so.
If an action in these procedures involves removing or replacing a part, use the applicable
procedure.
If the problem persists after you complete the actions in this procedure, return to step 1 of
the MAP to try again to fix the problem.
SAN Volume Controller 2145-DH8 does not have an external uninterruptible power supply unit. This system has battery modules
in its front panel instead.
Is the operator-information panel error LED( 4 in Figure 1 or
7 in Figure 2) illuminated or flashing? Or, is the check log LED ( 6 in Figure 2) illuminated or flashing?
Figure 1 shows the operator-information panel for the SAN Volume Controller 2145-SV1.
Figure 1. SAN Volume Controller 2145-SV1operator-information panel
1 Power-control button and power-on LED
2 Identify LED
3 Node status LED
4 Node fault LED
5 Battery status LED
Figure 2 shows the operator-information panel for the SAN Volume Controller 2145-DH8.
Figure 2. SAN Volume Controller 2145-DH8operator-information panel
1 Power-control button and power-on LED
2 Ethernet icon
3 System-locator button and LED
4 Release latch for the light path diagnostics panel
5 Ethernet activity LEDs
6 Check log LED
7 System-error LED
Note: If the node has more than four Ethernet ports, activity for ports 5 and above is not indicated
by the Ethernet activity LEDs on the operator-information panel.
Is the node fault LED, which is the middle of the three status LEDs on
the front panel of a SAN Volume Controller 2145-DH8, on?Figure 3 shows the node fault LED.
If the node does not have a front panel display, access the service assistant interface via the Technician port for node access and follow the service recommendation presented.
A cluster error was detected. This error code is displayed on all the operational nodes in the
system. The fix procedures normally repair this type of error. Follow these steps:
If the node does not power on, press power to power on the node and then
return to step 1 in this MAP.
YES
Complete the following steps:
Wait 60 seconds.
Click power to turn on the node and then return to step 1 in this MAP.
Is there a node that is not a member of a clustered system?You can tell if a node is not a member of a system because the node
status LED is off or blinking for SAN Volume Controller 2145-DH8.
The node is not a member of a system. The node might have been deleted during a maintenance
procedure and was not added back into the system. Make sure that each I/O group in the system
contains two nodes. If an I/O group has only one node, add the node back into that system. Then,
ensure that the node is restored to the same I/O group from which it was deleted.
No errors were detected by the system. If you suspect that the problem that is
reported by the customer is a hardware problem, follow these tasks:
Complete Problem Determination procedures on your host systems, disk controllers, and Fibre
Channel switches.
Can
you access the service assistant interface through the 2145-DH8 technician
port or service IP address, or use a USB flash drive to get satask_results.html?
NO
The system software might not be running. Attach a USB keyboard and VGA
monitor to the 2145-DH8 to
see whether the node is stuck booting.
Follow the recommended action for any node error that can be seen.
YES
The system software might not be able to communicate with the battery
backplane.
Check the connections between the system board and the battery backplane. Then, follow the
recommended action for node error 561.
Results
If you suspect that the problem is a software problem, see Updating the system documentation for details
about how to update your entire system environment.
If the problem is still not fixed, collect diagnostic
information and contact IBM® Remote
Technical Support.