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Welcome to Linux-IO,
the Linux SCSI Target wiki.
100 articles, 128,853,636 pageviews


LinuxIO (LIO) is the standard open-source SCSI target in Linux. It supports all prevalent storage fabrics, including Fibre Channel (QLogic, Emulex), FCoE, iEEE 1394, iSCSI (incl. Chelsio offload support), NVMe-OF, iSER (Mellanox InfiniBand), SRP (Mellanox InfiniBand), USB, vHost, etc.

The advanced feature set of LinuxIO has made it the SCSI target of choice for many storage array vendors, for instance allowing them to achieve VMware® Ready certifications. Native support for LIO in QEMU/KVM, libvirt, and OpenStack™ (setup, code) makes it an attractive storage option for cloud deployments.

LIO includes targetcli, a management shell and API with a single namespace for all storage objects.



Fabric Modules implement the protocols to transmit data over diverse fabrics, providing transport media independence.


Backstores implement the methods to access data on devices, providing storage media independence.


The LinuxIO engine implements the generic SCSI semantics.

Advanced SCSI feature set


targetcli provides the fabric agnostic single-node management shell for LIO. targetcli aggregates and exports all LIO SAN functionality via the RTSlib library and API [HTML][PDF].

Compatibility and certifications

LIO works with Initiators of the following operating systems:

LIO enables VMware Ready certifications (incl. vSphere™ 5). It also passes the Microsoft Windows® Server 2008 / R2 Failover Cluster compatibility test suites.

High availability and clustering

LIO is designed from ground up to support highly available and cluster storage:
  • Deeply embedded high availability (Network RAID1)
  • Scale-out clusters and disaster recovery solutions

See also

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