Working with extended storage pools

HCP uses extended storage pools to represent logical groups of storage components that can be used as storage tiers.

Each extended storage pool consists of one or more extended storage components that are used to access the same type of storage. A storage pool contains one or more extended storage component access points (mount points, buckets, or containers).

Each storage tier that is defined for a namespace by its service plan typically consists of only one storage pool; however, a tier can be configured to use multiple storage pools. To store objects on an extended storage tier, HCP uses all of the storage that is allocated to all of the extended storage component access points (mount points, buckets, or containers) that are contained in the storage pools that are configured for the storage tier. Therefore, the capacity of a given extended storage pool is the total amount of space that can be accessed using the extended storage component access points included in the pool. You can add access points to an extended storage pool at any time, thereby increasing the capacity of the pool.

Each extended storage component provides HCP with the information it needs to use one or more mount points, buckets, or containers to access and use the storage that’s represented by that extended storage component. However, HCP can actually use the storage that is represented by a given extended storage component only if at least one of its access points is contained in a storage pool that is included in at least one storage tier that is defined for a namespace by its service plan.

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