Resolving a problem
Described here are some procedures to help resolve fault conditions that might exist on your system and which assume a basic understanding of the Storwize® V7000 Unified system concepts.
- Procedures that involve data collection and system configuration
- Procedures that are used for hardware replacement.
Always use the recommended actions on the Events panel of the management GUI as the starting point to diagnose and resolve a problem.
The following topics describe a type of problem that you might experience, that is not resolved by using the management GUI. In those situations, review the symptoms and follow the actions that are provided here.
The Start here: Use the management GUI recommended actions topic gives the starting point for any service action. The situations covered in this section are the cases where you cannot start the management GUI or the node canisters in the control enclosure are unable to run the system software.
- Start here: Use the management GUI recommended actions
The management GUI provides extensive facilities to help you troubleshoot and correct problems on your system. - Problem: Another system may be using the system IP address
Another system may also be connected to your network, using the same IP address that is used for management communications to the Storwize V7000 system. This problem is also known as a duplicate IP address. - Problem: Unable to change the system IP address because you cannot access the CLI
Use the following solutions to change the system IP address by using the chsytemip CLI command when you cannot use SSH to connect to the system IP address to access the CLI. For example, when another machine on your network is using the same IP address. - Problem: Management IP address unknown
If you are not able to run the management GUI because you do not know the management IP address, you can retrieve the management IP address. - Problem: Unable to connect to the management GUI
If you are unable to connect to the management GUI from your web browser and received a Page not found or similar error, this information might help you resolve the issue. The connection information differs, depending on the generation of your control enclosure model. - Problem: Unable to log on to the management GUI
If you can see the management GUI login screen but cannot log on, you have several options for correcting the problem. - Problem: Cannot initialize or create a clustered system
Use this information if your attempt to create a clustered system has failed. This information varies depending on the generation of your control enclosure model. - Problem: Node canister service IP address unknown
You can use several methods to determine the service address of a node canister. The methods of determining the service address differ, depending on the generation of your control enclosure model. - Problem: Cannot connect to the service assistant
Use this information if you are unable to display the service assistant on your browser via the service IP address. Note that you can use the Technician port to access the service assistant GUI on a Storwize V7000 Gen2 node canister. - Problem: Management GUI or service assistant does not display correctly
If the Management GUI or the service assistant does not display correctly, verify that you are using a supported web browser. - Problem: A node canister has a location node error
The node error listed on the service assistant home page or in the event log can indicate a location error. - Problem: SAS cabling not valid
Use this procedure if you receive errors to determine if your SAS cabling is valid. The procedure differs, depending on the generation of your control enclosure model. - Problem: New expansion enclosure not detected
Determine why a newly installed expansion enclosure was not detected by the system. - Problem: Control enclosure not detected
If a control enclosure is not detected by the system, this procedure can help you resolve the problem. - Problem: Mirrored volume copies no longer identical
The management GUI provides options to either check copies that are identical or to check that the copies are identical and to process any differences that are found. - Problem: Command file not processed from USB flash drive
This information assists you in determining why the command file is not being processed, when using a USB flash drive. - Problem: A storage pool has arrays that are not encrypted
The management GUI provides a way to determine if each of the arrays in a storage pool are encrypted. - Problem: CIFS IO outage
Use this information if you experience a CIFS IO outage. - Procedure: Resetting superuser password
You can reset the superuser password to the default password of passw0rd by using a special command action. The password procedure differs, depending on the generation of your control enclosure model. - Procedure: Identifying which enclosure or canister to service
Use this procedure to identify which enclosure or canister must be serviced. Identification procedures differ, depending on the generation of your control enclosure model. - Procedure: Checking the status of your system
Use this procedure to verify the status of objects in your system using the management GUI. If the status of the object is not online, view the alerts and run the recommended fix procedures. - Procedure: Getting node canister and system information using the service assistant
This procedure explains how to view information about the node canisters and system using the service assistant. - Procedure: Getting node canister and system information using a USB flash drive
You can view information about the node canister and system using a USB flash drive. - Procedure: Understanding the system status using the LEDs
Use this procedure to determine the system status using the LED indicators on the system. The procedure differs, depending on the generation of your control enclosure model. - Procedure: Finding the status of Ethernet connections
Use this procedure to find the status of Ethernet connections when you cannot connect. This procedure differs, depending on the generation of your control enclosure model. - Procedure: Finding the status of Storwize V7000 Gen2 SAS connections
Find the status of the SAS connections between Storwize V7000 Gen2 canisters in different enclosures. - Procedure: Removing system data from a node canister
You can safely remove system information from a node canister, if you follow the proper guidelines and procedure. The information that is removed includes configuration data, cache data, and location data. - Procedure: Deleting a system completely
You might need to completely remove all system information. When the procedure is finished, the system operates like a new installation. No data is retained. - Procedure: Fixing node errors
To fix node errors that are detected by node canisters in your system, use this procedure. - Procedure: Changing the service IP address of a node canister
This procedure identifies many methods that you can use to change the service IP address of a node canister. - Procedure: Initializing a clustered system with a USB flash drive without using the initialization tool
Use this procedure to initialize a clustered system using a USB flash drive when you do not have a workstation to run the initialization tool or you do not have a copy of the tool. - Procedure: Initializing a clustered system using the service assistant
Use this procedure to initialize a clustered system using the service assistant. This procedure differs, depending on the generation of your control enclosure model. - Procedure: Accessing the service assistant from the technician port
If a node canister is inaccessible through your administrative network, use this procedure to connect a personal computer directly to the node canister to access the service assistant. - Procedure: Accessing aStorwize V7000 Gen1 canister using a directly attached Ethernet cable
If you need to use a direct Ethernet connection to attach a personal computer to a Storwize V7000 Gen1 node canister to run the service assistant or to use the service CLI, use this procedure. - Problem: Reseating a node canister
Use this procedure to reseat a node canister. The procedure differs, depending on the generation of your control enclosure model. - Procedure: Removing a Storwize V7000 Gen2 node canister
Follow this procedure to remove a node canister. - Procedure: Powering off your system
You must power off your Storwize V7000 Unified system in order to service it, or to permit other maintenance actions in your data center. To turn off the Storwize V7000 Unified system, see "Turning off the system." - Procedure: Powering on the Storwize V7000 Gen2 system
After installing all hardware components, you must power on the Storwize V7000 Gen2 system and check its status. - Procedure: Powering off a Storwize V7000 Gen2 control enclosure
To service a Storwize V7000 Gen2 control enclosure, you must safely power off both of the node canisters in the enclosure. - Procedure: Restarting a Storwize V7000 Gen2 control enclosure
To restart a Storwize V7000 Gen2 control enclosure, you must reseat the node canisters. - Procedure: Powering off a Storwize V7000 Gen2 node canister
You can safely power off a node canister to service the node canister. - Procedure: Collecting information for support
IBM support might ask you to collect trace files and dump files from your system to help them resolve a problem. Typically, you perform this task from the Storwize V7000 Unified management GUI. You can also collect information from the Storwize V7000 control enclosure itself. - Procedure: Rescuing node canister software from another node (node rescue)
Use this procedure to complete a node rescue. This procedure differs, depending on the generation of your control enclosure model. - Procedure: FCoE host-linking
- Procedure: Removing and replacing the lid of a Storwize V7000 Gen2 node canister
To remove or replace the lid of a Storwize V7000 Gen2 node canister, use this procedure. - Procedure: Understanding Storwize V7000 Gen2 volume dependencies
If one component in a redundant pair is offline or powered off, host access to volumes depends on a Storwize V7000 Gen2 enclosure or canister in the system.