Article

Mellanox builds bridge to consolidation

Dave Raffo

Mellanox Technologies Ltd. today rolled out another alternative for data center consolidation, a gateway that lets organizations run Fibre Channel (FC), Ethernet and InfiniBand on one network.

The BridgeX gateway connects Ethernet or InfiniBand switches to Ethernet or FC networks. Mellanox sells InfiniBand switches, silicon and host bus connectors (HBCs), and last year began diversifying its product platform to try and provide one fabric to connect the entire data center.

BridgeX supports the Virtual Protocol Interconnect (VPI) technology that Mellanox launched last year for its ConnectX host adapters that support InfiniBand, Ethernet and Fibre Channel over Ethernet (FCoE). VPI supports port auto-sensing of the fabric, and configures the adapter to the correct mode.

The BridgeX gateway comes as Brocade, Cisco Systems Inc. and other network connectivity vendors are putting together an ecosystem for FCoE to consolidate storage-area networks (SANs) and local-area networks (LANs). Cisco supports FCoE in its Nexus switches, while Brocade plans to enable FCoE through its DCX Backbone platform. Fibre Channel host bus adapter (HBA) vendors Emulex Corp. and QLogic Corp. have launched converged network adapters (CNAs) for FCoE, and storage array vendors EMC Corp. and NetApp have pledged FCoE support in future systems.

BridgeX can serve as an alternative to FCoE or enable it – Mellanox will sell BridgeX silicon to Ethernet switch vendors

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to develop FCoE switches. BridgeX devices do not require InfiniBand or ConnectX cards.

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BridgeX supports 40 Gbps InfiniBand, 10 Gigabit Ethernet and 8 Gbps Fibre Channel. It can be used as an InfiniBand-to-Ethernet and FC gateway, or Ethernet-to-Ethernet and FC gateway. The initial product in the platform, the BX4000, has four InfiniBand or 12 Ethernet uplink ports, and up to 16 FC or 12 Ethernet downlink ports. When the uplink ports are Ethernet, BridgeX can serve as an FCoE link to Fibre Channel storage.

BridgeX promises many of the same advantages that storage networking vendors claim for FCoE – it can reduce cabling, power and cooling in the data center, and also gives administrators one fabric to manage. Gilad Shainer, Mellanox's director of technical marketing, said BridgeX can enable consolidation without requiring a major data center upgrade.

"Other vendors are forcing people to use a specific solution," Shainer said. "We're saying, 'How can we enable you to use all the applications and transports you're using now?'"

While most industry experts say FCoE or other methods of data center consolidation probably won't happen on a widespread basis until 2010 or later, analysts say enterprises are beginning to form their strategies now.

"I think converged networks are inevitable," said Nik Simpson, senior analyst at Midvale, Utah-based Burton Group. "There are just too many advantages to it from an overall view of the enterprise to see it not happening. We're going to see more and more storage arrays with native FCoE targets, and we're seeing server platforms with 10 gigE on the motherboard."

Simpson said BridgeX is a good way to consolidate cabling without doing a forklift upgrade.

Zeus Kerravala, senior vice president of global enterprise research at Boston-based Yankee Group, says it will probably take a while for a dominant consolidation technology or protocol to emerge, but BridgeX can serve as an early step in the process.

"This provides a roadmap to FC over Ethernet," Kerravala said. "It offers companies a way to try it out or at least phase it in. This is a way for companies to start thinking of consolidation without having to commit a lot of capital to it because it doesn't have to be a hard rip and replace."

Other vendors have offered InfiniBand gateways for FC and Ethernet, but Mellanox's Shainer said they had to first terminate InfiniBand and then initiate a new protocol. He said that added cost and power requirements, and prevented them from working at wire speed.

Pricing for the BridgeX gateways starts at $9,995, and the silicon costs less than $500 per box. Shainer said he expects server vendor OEM partners to begin shipping in volume next month.

 


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