Chapter 13. Maintenance and troubleshooting 575
Here is a typical troubleshooting procedure:
1. Start by considering the state of the power LED 8, as shown in Figure 13-2 and
Table 13-2. Continue to troubleshoot the canister until the power LED is ON.
Table 13-2 Node canister Power LED states
2. If the power LED is on solid, consider the state of the canister status LED 9 for each node
canister, as shown in Table 13-3.
Table 13-3 Node canister status LED statues
LED
layout
LED Name Color States
Power
Green OFF – There is no power to the canister. Make sure that the CMM has
powered on the storage node.
The CMM event log might also indicate why the node canister has no
power. Otherwise try re-seating the canister. If the state persists, follow
the hardware replacement procedures for the parts in the following
order: node canister, control enclosure.
ON SOLID – The canister is powered on. It is the normal state.
BLINK – The canister is in a standby state after being powered down.
Use the CMM to power on the canister.
Note: The Power LED can also be in the BLINK state after the canister
has been inserted and has been discovered by the CMM but before the
V7000 code has booted.
FAST BLINK – The node canister is in the process of communicating
with the CMM during initial insertion of the canister. If the canister
remains in this state for more than 10 minutes, Try re-seating the
canister. If the state persists, follow the hardware replacement
procedure for the node canister.
LED
layout
LED Name Color States
Canister status
Green OFF – The IBM Flex System V7000 system code is not running. If the
Power LED is ON, the operating system has not started the IBM Flex
System V7000 system code yet. This state is normal just after the
canister is powered on. If it persists for more than 10 minutes, check
the canister status using the CMM.
ON SOLID – The canister is active and able to perform I/O as part of
an IBM Flex System V7000. The IBM Flex System V7000 management
GUI is available if any node canister in the system has its status LED
ON. Do not power off, or remove, a node canister whose status LED is
on solid. You might lose access to data or corrupt volume data. Follow
the proper procedure to shut down a node so that access to data is not
compromised.
BLINK – The canister is in candidate or service state and is not
participating in I/O. If possible, use the recommended action in the
event log event log shown by the management GUI to service the node
canister. If it is not possible, use the service assistant to determine the
state of the node canister and resolve any critical node errors that stop
the canister from becoming active.
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