Procedure: Understanding the Storwize V7000 Gen2 system status from the LEDs
To determine the Storwize® V7000 2076-524 system status using the LED indicators on a control enclosure, use this procedure.
About this task
To understand the status of the I/O port at the rear of a control enclosure, refer to the topic about Storwize V7000 2076-524 node canister ports and indicators that is linked at the end of this topic.
Status indicators on the front of a control enclosure are described in the topic about components in the front of the enclosure that is linked at the end of this topic.
A detailed view of the system state is provided in the Monitoring sections of the management GUI and by the service assistant. If neither the management GUI nor the service assistant is accessible, use this procedure to determine the system status using the LED indicators on the control enclosures.
The system status LEDs visible at the rear of each control enclosure can show one of several states, as described in Table 1.
| State description | Detail |
|---|---|
| Off | The LED is continuously not lit. |
| Flashing slowly | The LED turns on and off at a frequency of 1 Hz: It is on for 500 ms, then off for 500 ms, then repeats. |
| Flashing | The LED turns on and off at a frequency of 2 Hz: It is on for 250 ms, then off for 250 ms, then repeats. |
| Flashing fast | The LED turns on and off at a frequency of 4 Hz: It is on for 125 ms, then off for 125 ms, then repeats. |
| On | The LED is continuously lit. |
| Flashing | The LED is lit to indicate some activity, then turns off. The rate and duration that the LED is lit depends on the rate and duration of the activity. |
Procedure
Complete the following steps to understand when a node canister is not participating in the system, and what remedial action to take.
- If at least one PSU is providing
power to a control enclosure, use Table 3 to check
the status of each node canister in that enclosure.
Table 2. Understanding the power supply unit LEDs LED state Action Fault (amber)
ac power (green)
dc power (green)
On (any) (any) Replace the power supply unit, as described in Replacing a Storwize V7000 Gen2 power supply unit for a control enclosure. Off On On The power supply is functioning normally, providing power to the enclosure. Off Replace the power supply unit, as described in Replacing a Storwize V7000 Gen2 power supply unit for a control enclosure. Off On Replace the power supply unit, as described in Replacing a Storwize V7000 Gen2 power supply unit for a control enclosure. Off The power supply is not receiving power from the power outlet through the power cord. To power on the system, connect the power supply to an outlet in use for the power cord and turn on the power outlet. Note: The fourth status LED on the power supply unit is not used.Table 3. Understanding the node canister status LEDs LED state Description Power (green)
Fault (amber)System status (green)
Off (any) (any) Power is not being provided by any power supply unit (PSU) in the enclosure, or power is coming from the battery in the canister.
If at least one PSU is powering the enclosure, the canister or the enclosure midplane might be faulty.
If both node canisters in an enclosure indicate this state at the same time, it is more likely that the enclosure midplane is faulty. Reseat any node canister in this state, as described in Procedure: Reseating a Storwize V7000 Gen2 node canister. If the condition persists, replace the node canister. If just one canister is affected, see Replacing a Storwize V7000 Gen2 node canister. If both canisters are affected, see Replacing a Storwize V7000 Gen2 control enclosure midplane assembly.
Flashing slowly Power is available, but the canister is powered off. (The main CPU is not running.)
Restart the node canister, as described in Procedure: Reseating a Storwize V7000 Gen2 node canister.
Flashing fast The node canister is doing a self test during start-up.
Wait for the canister to complete its start-up sequence.
On Off Off The node canister is in standby mode. (The Storwize V7000 software is not running.)
It is safe to remove or reseat the canister.
Restart the node canister, as described in Procedure: Reseating a Storwize V7000 Gen2 node canister.
Flashing The node canister is in candidate state. The node is not doing I/O in the system.
Unless indicated by the battery status LED, it is safe to remove or reseat the canister. See Table 4.
If the node state is candidate and the system is running on the other node canister, the candidate node is automatically added to the system.
If both node canisters are in candidate state, determine whether you must recover the system or create a new system.
Flashing fast The node is doing an emergency shutdown operation, using the battery for power, after detecting a loss of power from the power supply units.
Wait for the emergency shutdown operation to complete. If the partner node has also done an emergency shutdown operation, there was most likely a loss of input power to both enclosure power supply units and the system restarts when the input power is restored. Otherwise, there might be a fault the node canister, enclosure midplane, or power supply units.
On The Storwize V7000 software is running, and the node canister is participating in the system.
The canister must not be removed.
This is the normal operational LED state.
On Flashing Off The node canister is in standby mode. (The Storwize V7000 software is not running.)
It is safe to remove or reseat the canister.
Flashing The Identify function for this canister has been activated. To determine if it is safe to remove the canister, use the management GUI or service assistant to turn off the Identify function, then check the node canister status LEDs again. On Flashing Flashing fast The Identify function for this canister has been activated.
The node is doing an emergency shutdown operation, using the battery for power, after detecting a loss of power from the power supply units.
Wait for the emergency shutdown operation to complete. If the partner node has also done an emergency shutdown operation, there was most likely a loss of input power to both enclosure power supply units and the system restarts when the input power is restored. Otherwise, there might be a fault in the power supply units or the node canister.
On Flashing On The Identify function for this canister was activated.
To determine if it is safe to remove the canister, use the management GUI or service assistant to turn off the Identify function, then check the node canister status LEDs, again.
On On Off The Storwize V7000 software is not running. The BIOS might have detected a fault.
It is safe to remove or reseat the canister.
Try reseating the canister, as described in Procedure: Reseating a Storwize V7000 Gen2 node canister. If the canister still shows this fault, replace the node canister, as described in Replacing a Storwize V7000 Gen2 node canister.
On On Flashing The node is in service state.
It is safe to remove or reseat the canister.
See Table 4 to determine whether the battery charge is insufficient.
Use the service assistant to identify any node errors or to determine what to do, see Procedure: Fixing node errors.
If the node is able to communicate with the configuration node, there might also be an error alert in the system event log, in which case you should run the associated fix procedure.
On On Flashing fast The node is in service state.
There is a code update in progress.
The canister must not be removed.
No action is required until the code update completes.
On On On The Storwize V7000 software is running but there might be an error alert in the event log, such as error code 550.
The canister must not be removed.
If possible, go to the management GUI and run the fix procedure for the error alerts listed there. If this is not possible, refer to the service actions for node error 550.
Table 4. Understanding the node canister battery status LEDs LED state Description Fault (amber)Status (green)
On On A battery fault exists that caused the node canister to do an emergency shutdown operation (storing its cache data to the system disk). The node canister is in service state or is going into service state. The service assistant shows a node error.
Replace the battery in the node canister, as described in Replacing the battery in a Storwize V7000 Gen2 node canister.
On Off A battery fault exists that caused the node canister to shut down to service state. There was insufficient power in the battery or the supply for the node canister to do an emergency shutdown operation. The service assistant shows a node error.
Replace the battery in the node canister, as described in Replacing the battery in a Storwize V7000 Gen2 node canister.
Off Flashing fast The battery is charging and has insufficient charge to protect against a single ac loss. The node is held in service state with a fatal node error until the battery has charged. Flashing The battery has sufficient charge to complete one emergency shutdown operation.
This state does not prevent the canister from participating in the system.
The battery continues to charge until it is able to complete two emergency shutdown operations. No action is necessary.
On The battery is optimally charged, such that the node canister is able to complete two emergency shutdown operations.
This state does not prevent the canister from participating in the system. The canister continues to manage the battery charge.
No action is necessary.