Monitoring
Monitoring the
system
software and hardware components helps to
verify that tasks have completed successfully. If a problem occurs during a lengthy operation,
monitoring the task ensures quick detection and resolution.
Preventive monitoring
To prevent problems before they occur, you can monitor and verify the system hardware and software periodically. Some of the following activities can be completed on a daily or weekly basis. Typically, you complete the following activities at least every six months.
Monitoring size limits for compressed volumes
During a software update, a system that has volumes near 128 TB of used physical space alerts you to take certain measures to prevent them from becoming read only.
Retrieving statistics files
To view the statistics files, you need to retrieve them from the /dumps/iostats
directory on the configuration node. This topic explains how to retrieve them.
Monitoring IBM Easy Tier statistics
The management GUI supports monitoring Easy Tier® data movement in graphical reports. The data in these reports helps you understand how Easy Tier manages data between the different tiers of storage, how tiers within pools are used, and the workloads among the different tiers. Charts for data movement, tier composition, and workload skew comparison can be downloaded as comma-separated value (CSV) files.
Monitoring external storage systems
This section provides information about monitoring your external storage systems.
Checking the status of NVMe hosts
You can use the command-line interface (CLI) to check the status of hosts that are connected to the system via the NVMe protocol.
Monitoring capacity
The system supports multiple ways of monitoring and adjusting capacity for your data. Use these methods to determine whether new storage resources are needed or if existing resources need to be reallocated.
Monitoring MDisks and pools
MDisks and pools contain storage that is used by volumes. You can monitor MDisks and pools to determine if there are any problems with the underlying storage that can interfere with host access to volumes.
Monitoring nodes
You can monitor nodes to determine whether the nodes in your system are online. To monitor nodes in the management GUI , select . Select the canister in which the node resides to view status for the node.