Capacity metrics for object storage systems
To review trends in capacity and space usage for object storage systems, you add metrics to capacity charts. Use the charts for containers to detect capacity shortages and space usage trends for the containers in your object storage systems.
Capacity metrics for containers
If sufficient data is collected about the containers in your object storage systems, you can view charts that compare the used capacity of the containers. You can add the following metrics to the capacity chart for containers:
- Available Objects
- The number of objects that you can add to the container on the object storage system.
- Available Capacity (GiB)
- The amount of file system capacity that can be used to store object data for the container.
- Capacity Quota (%)
- The percentage of the capacity quota for the container that was used when data was collected for
the storage system. The quota limits the amount of file system capacity that can be used by the
container. This column contains a value only if a capacity quota is defined for the container on the
OpenStack Swift object storage system.
If the used capacity value for the container exceeds the capacity quota value, the percentage exceeds 100%. The used capacity can exceed the capacity quota if the quota is set after object files are uploaded to the file system or if an object file without size information is uploaded to the file system.
- Capacity Quota (GiB)
- The amount of file system capacity that can be used to store object data for the container. This column contains a value only if a capacity quota is defined for the container on the OpenStack Swift object storage system.
- Objects
- The number of objects in the container on the object storage system.
An object stores data content, such as files, videos, images, virtual machine snapshots, and other unstructured data. In IBM Storage Scale, objects are stored as files on the GPFS file system.
- Objects Quota
- The number of objects that can be stored in the container. This column contains a value only if an objects quota is defined for the container on the OpenStack Swift object storage system.
- Objects Quota (%)
- The percentage of the objects quota for the container that was used when data was collected for
the storage system. The quota limits the number of objects that can be stored in the container. This
column contains a value only if an objects quota is defined for the container on the OpenStack Swift
object storage system.
If the number of objects that are used exceeds the objects quota, the percentage exceeds 100%. The number can exceed the quota if the quota is configured after the object files are stored on the file system.
- Used Capacity (GiB)
- The amount of file system capacity that is used by the objects in the container. If data collection occurs immediately after objects are added to a container, the used capacity value might not reflect the updates until after the next data collection.