|Chelsio’s Terminator Series (T4 and T5) adapters are all-in-one Unified Wire Adapters and offer full iSCSI offload capability and protocol acceleration for both file and block‐level storage traffic. For file storage, the adapters support full TCP/IP offload via its TCP Offload Engine (TOE) under Linux and TCP Chimney under Windows. For block storage, the adapters support partial and full iSCSI offload, where processing intensive tasks such as PDU recovery, header and data digest, CRC generation/checking, and Direct Data Placement (DDP) are offloaded by the ASIC.
The adapters are capable of performing full offload as both Initiatior and Target at 1, 10 and 40Gbps.
Just as computing power moved to decentralized networks of computers, storage technology has also evolved from host-centric direct-attached storage to network-centric Storage Area Networks (SANs). One of the great challenges facing the storage industry has been to provide reliable and manageable service over a network of inexpensive storage systems.
Fibre Channel (FC) vs. iSCSI
In today’s SANs, FC — featuring high bandwidth, low latency and advanced flow control for burst storage transfers — is the most popular method for connecting storage devices to networked clients. It does have some drawbacks, including:
Each of these disadvantages ultimately adds to the excessive total cost of ownership. To overcome the problems, the storage industry recently developed iSCSI, a new technology which allows a storage network to be built based on the popular TCP/IP protocol and Ethernet. The technology features the following benefits:
With the introduction and standardization of iSCSI, Ethernet has become a viable connectivity that development, combined with the 10 GbE and now 40GbE with offload capabilities, overcomes the traditional objections about Ethernet-based storage networks: low bandwidth, high latency, and lack of flow control.
Chelsio has taken a leading role in this market segment with the introduction of the Terminator Series Converged Network Adapters (CNAs). The family of adapters stands out as the leading storage networking building block, thanks to its record throughput and IOPS, as well as its Ethernet-based technology. These adapters have greater throughput and lower latency than competing technologies, and is driving the convergence of LANs, SANs and NAS by supporting multiple protocols. With the Chelsio Terminator Series, 40,10 and 1GbE iSCSI offload is real and available.
Chelsio Delivers 40Gb Ethernet Adapter (40GbE)
Chelsio Communications, a leading provider of 10Gb Ethernet (10GbE) Unified Wire Adapters and ASICs, today announced the availability of the first set of 40Gb Ethernet (40GbE) network adapters based on the fifth generation of its hyper‐virtualized Terminator ASIC architecture. The Terminator 5 (T5) powered adapters are the industry’s highest performance Ethernet interfaces, delivering wire speed bandwidth, ultra low latency and high message processing capacity. With a comprehensive suite of offloaded storage, compute and networking protocols – including RDMA, TCP/IP, UDP/IP, iSCSI and FCoE with T10‐DIX – these adapters enable network convergence and provide unprecedented performance in virtualized environments, while dramatically increasing host system efficiency and lowering communications overhead.
Chelsio Demonstrates Next Generation 40G iSCSI at SNW Spring
Chelsio Communications, a leading provider of High Speed Ethernet Unified Wire adapters and ASICs, will be demonstrating industry’s first 40G offloaded iSCSI performance on its Terminator 5 (T5) ASIC, targeted at next generation Storage Area Networks (SANs), this week at SNW Spring, 2013.
End Of Life for FC ?
Present in some forms since as early as the 1980s, Fibre Channel (FC) was standardized in the mid 1990s. While it took a few years to adopt, it has enjoyed an exceptionally long period of use given elevated costs and a relatively slow rate of improvement. The storage technology’s lack of flexibility and capability in enabling general purpose networking and latency sensitive compute applications has further relegated the protocol to a single purpose, and closed off any avenues to move it forward.