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Architecture
- High-performance, non-blocking, multithreaded architecture with SSE4.2 support.
- CPU architectures: x86, ia64, Alpha, Cell, PPC, ARM, MIPS, etc.
- Distributions (with out-of-tree builds): CentOS, Debian, Ubuntu
- Platforms: PC architecture, Sony PS2 and PS3, and Technologic TS-7800
- No single point of failure within either logical or physical connections.
Advanced SCSI feature set
- Persistent Reservations (PRs)
- Asymmetric Logical Unit Assignment (ALUA)
- Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
- Full Error Recovery (ERL=0,1,2)
- Active/active task migration and session continuation (ERL=2)
- Thin LUN provisioning
Multiprotocol target
Storage media independence
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Compatibility and certifications
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LIO is compatible to Initiators on the following operating systems:
- Microsoft: Windows Server 2003/2008/R2, Windows XP/Vista/7
- Apple Mac OS X Leopard (via third-party initiator)
- Linux: RHEL 4.x/5.x, SLES 10.3/11, CentOS, Debian, Ubuntu
- Unix: Solaris 10, OpenSolaris, HP-UX
- VMs: VMware ESX and VMware vSphere, Red Hat KVM, Microsoft Virtual PC, Oracle xVM/VirtualBox, Xen
LIO passed VMware ESX 4.0 and VMware vSphere 4.0 certifications with Netgear, QNAP and Synology storage appliances. It also passes the Microsoft Windows Server 2008 / R2 Failover Cluster compatibility test suites.
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Standards compliance
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The Core-iSCSI Initiator is a high-end iSCSI Initiator that resolves a number of known issues with the Open-iSCSI standard Linux Initiator, especially its slow performance.
Core-iSCSI is available on Linux and Windows, and it has been ported to a wide range of platforms and devices, including:
RisingTide Systems ported OCFS2 onto the Nokia Internet Tablets on top of the Core-iSCSI Initiator.
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LIO is designed from gound up to support highly available and cluster storage:
- Deeply embedded high availability (Network RAID1)
- Scale-out clusters via concatenating LUNs
- Scale-out clusters via striping (1H2011)
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Management
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LIO is complemented with three comprehensive management frameworks:
- Single-node management: RTSadmin
- Unified cloud/cluster management: RTS Director
- Cloud computing prototype: VHACS (predecessor of RTS Director)
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LIO has been integrated into RTS OS, a comprehensive single-node storage operating system. RTS OS is currently being extended into RTS Live, a cluster storage operating system that is based on RTS Director.
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RTS Director is a distributed, highly-available cluster management framework. It comprises a shell, active library and API. The active library and API provide an extensible platform with a unified namespace to manage complex functionality, such as high-availability and cluster striping. The shell offers location-transparent access to all objects in the SAN. New functionality and devices can be added via plugin-modules.
RTS Director provides zero configuration. It is based on a symmetrically distributed architecture - there is no single point of failure, no cluster controller, no central database, etc. Nodes running the RTS Director automatically discover and join the cluster when coming up (demo video).
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