Home > Storage > PowerStore > Data Protection > Dell PowerStore: Metro Volume > Introduction
The previous sections, Metro Volume and Witness, lay the groundwork for understanding Metro Volume, detailing its functionality, operation, and various failure protection scenarios. It is recommended to familiarize yourself with this information. This section focuses on the interactions and ALUA states of Metro Volumes on Linux.
Metro Volume is a storage-level feature that requires no modifications to the Linux hosts or applications. It is a stretched volume spanning across two PowerStore clusters. Each Metro Volume consists of two volumes, one on each cluster, synchronized bi-directionally over a replication network.