- Notes, cautions, and warnings
- Introduction to this guide
- InsightIQ overview
- Cluster monitoring
- Performance reports
- Performance Reports Overview
- Live Performance Reports
- Cluster Performance report overview
- Node Performance report overview
- Network Performance report overview
- Client Performance report overview
- Disk Performance report overview
- File System Performance report overview
- File System Cache Performance report overview
- Cluster Capacity Performance report overview
- Deduplication Performance report overview
- Cluster Events Performance report overview
- Jobs and Services Performance report overview
- Partition Performance Report Overview
- Interpreting Performance Reports, Modules, and Breakouts
- Publish reports
- Customizing Performance Reports
- File System reports
- InsightIQ export data
Dell InsightIQ 4.3.0.0 User Guide
Capacity reports overview
Capacity reports show an estimate of available storage on a cluster.
Capacity reports show the estimated amount of data that can be added to a cluster before the cluster reaches capacity. This estimate is different than the physical free space that OneFS reports. The amount of physical free space does consider the amount of protection overhead that is required to protect the stored data. Because clusters have varied protection settings that can change over time, InsightIQ estimates the size of protection overhead that is required to protect data.
If the data protection changes on the cluster, the estimate of usable capacity changes, even if the data stored on the cluster remains constant. For example, assume that a cluster contains 3 TB of data. 1 TB is protected at +3, and the other 2 TB is protected at +2. If 2 TB of data is later protected at +3, and 1 TB is protected at +2, the estimated amount of protection overhead increases. This increase is because the ratio of user data to protection overhead changes.
You can choose the File System Analytics report that you want to create protection overhead estimates. Protection overhead is calculated based on the cluster configuration at the time that the job is run. This information can be useful if you expect the cluster configuration to resemble a previous configuration. If you do not create a File System Analytics report, protection overhead is not in Capacity reports.
If you view a Capacity report for clusters running OneFS 7.1.1 or earlier, the report does not include storage that is used by virtual hot spares or snapshots. Any remaining capacity appears greater than it actually is.
Capacity reports include the Cluster Capacity Performance module that can be viewed in a Live Performance report.
NOTE: Protection overhead estimates do not account for the
/ifs/.ifsvar directory because the
/ifs/.ifsvar directory is protected at a higher level than other directories.
/ifs/.ifsvar does not reflect the level of the protection that is applied to the majority of the file system. Also, because the
/ifs/.ifsvar directory stores only internal OneFS files, the directory is expected to scale at a much slower rate than other directories on the file system.
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