Accessing Virtuozzo Storage Clusters via iSCSI

Virtuozzo Storage allows you to export cluster disk space outside Virtuozzo Storage bounds to operating systems and third-party virtualization solutions. Using dedicated pstorage-iscsi tools, you can export Virtuozzo Storage disk space as LUN block devices over iSCSI in a SAN-like manner.

In Virtuozzo Storage, you can create and run multiple iSCSI targets per Virtuozzo Storage cluster Node. In turn, each iSCSI target can have multiple LUNs (virtual disks). At any given moment, each iSCSI target runs on a single Hardware Node. Thanks to High Availability, if a Node fails, iSCSI targets hosted on it are moved to and relaunched on a healthy Node (for more details on High Availability, see the HA chapter in the Virtuozzo 6 User's Guide).

The figure below shows a typical network configured for exporting Virtuozzo Storage disk space over iSCSI.

In this example are three Virtuozzo Hardware Nodes working in a Virtuozzo Storage cluster. Two Nodes host one iSCSI target each while the third hosts two iSCSI targets. Each Node has a static or dynamic IP address assigned from the Storage BackNet (created along with the Virtuozzo Storage cluster) and the FrontNet. Each iSCSI target has a static IP address assigned from the FrontNet.