Troubleshooting
Troubleshooting procedures help you diagnose problems.
- How to get information, help, and technical assistance
If you need help, service, technical assistance, or just want more information about IBM® products, you will find a wide variety of sources available from IBM to assist you. - IBM Spectrum Virtualize user interfaces for servicing your system
The IBM Spectrum Virtualize™ provides a number of user interfaces to troubleshoot, recover, or maintain your system. The interfaces provide various sets of facilities to help resolve situations that you might encounter. - Starting statistics collection
The system collects statistics over an interval and creates files that can be viewed. - Event reporting
Events that are detected are saved in an event log. As soon as an entry is made in this event log, the condition is analyzed. If any service activity is required, a notification is sent, if you have set up notifications. - Understanding event codes
The IBM Spectrum Virtualize system generates informational events when significant changes to the state of the system are detected. - Understanding the error codes
Error codes are generated by the event-log analysis and system configuration code. - Viewing the messages and codes
IBM Spectrum Virtualize messages and codes are returned for error conditions and operational status information. - Viewing logs and traces
The IBM Spectrum Virtualize clustered system maintains log files and trace files that can be used to manage your system and diagnose problems. - Resolving a problem with accessing 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. - Resolving a problem with SSL certificates
If you are unable to connect to the management GUI from your web browser and received a Certificate expired or similar error, this information might help you resolve the issue. - Resolving a problem with SSL/TLS clients
Changing the security level of the system might cause the web interface, CIM clients, and other SSL/TLS clients to stop working. If any clients stop working, complete the following procedure. - Resolving a problem with offloaded data transfer
When Microsoft offloaded data transfer (ODX) is enabled on a system, it is possible to encounter problems. These procedures help you address some common issues that might arise. - Resolving a problem with Microsoft Windows disk manager
Microsoft Windows disk manager might hang if the host attempts to write to a LUN that is a remote copy secondary volume on a IBM Spectrum Virtualize system. This procedure addresses this issue. - Procedure: Shutting down a HyperSwap site
You can shut down one site in a HyperSwap® topology system without hosts losing access to the HyperSwap volumes, if there is an up-to-date copy of each HyperSwap volume on the site that remains online. - Determining the failing disk controller by using the CLI
You can use the command-line interface (CLI) to determine the failing disk controller. - Diagnosing and resolving problems with fix procedures
You can use fix procedures to diagnose and resolve problems with the system. - Understanding the medium errors and bad blocks
A storage system returns a medium error response to a host when it is unable to successfully read a block. The IBM Spectrum Virtualize response to a host read follows this behavior. - iSCSI performance analysis and tuning
This procedure provides a solution for Internet Small Computer Systems Interface (iSCSI) host performance problems while connected to a IBM Spectrum Virtualize system and its connectivity to the network switch. - Debugging iSCSI backend sessions
Complete the steps in the following procedures to debug iSCSI backend sessions. - Ethernet iSCSI host-link problems
If you are having problems attaching to the Ethernet hosts, your problem might be related to the network, the IBM Spectrum Virtualize system, or the host. - Procedure: SAN problem determination
You can solve problems on the IBM Spectrum Virtualize system and its connection to the storage area network (SAN). - Fibre Channel and 10G Ethernet link failures
You might need to replace the small form-factor pluggable (SFP) transceiver when a failure occurs on a single Fibre Channel or 10G Ethernet link. - Disaster recovery
Use these disaster recovery solutions for HyperSwap, Metro Mirror, Global Mirror, and Stretched Cluster, where access to storage is still possible after the failure of a site. - Recover system procedure
The saved configuration data is in the active quorum disk and the latest XML configuration backup file. The recovery might not be able to restore all volume data. This procedure is also known as Tier 3 (T3) recovery. - Backing up and restoring the system configuration
You can back up and restore the configuration data for the system after preliminary tasks are completed.