PoolManager Property Unit

The PoolManager is the core of dCache as it maps files via to dCache to the storage on disk. This component is configured with a hierarchical configuration and the smallest unit of configuration is the property Unit. The Poolmanager groups together many "unit" into a ugroup.

Types of Unit

Units come in 4 types.

• Storage class
• Network
• Protocol
• Data Flow Direction

These are explained more throughly further in the page.

Storage Class

Is a label associated with a subtree of the names space, this label is then allowed to group together files within this part of the sub tree.

Network

Protocol

Direction

(read write cache pool2pool)