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HP aims three-part effort at network virtualization

Stephen Lawson | Aug. 15, 2012
Hewlett-Packard is readying three new software capabilities that are designed to help enterprises pool their computing and storage resources across a network.

Hewlett-Packard is readying three new software capabilities that are designed to help enterprises pool their computing and storage resources across a network.

The advances should make it easier for IT departments to link data centers spread around the world, shield multiple tenants' virtual machines from each other and control storage from virtualized appliances.

HP is adding the features to its HP Converged Infrastructure arsenal, which is part of the company's SDN (software-defined networking) strategy, according to Kash Shaikh, director of marketing for HP Networking. In at least one case, it's positioning the technology directly against products from Cisco Systems, which is its main rival as SDN takes shape.

To combine geographically dispersed data centers into a virtual whole so data and virtual machines can be moved among them, HP plans to introduce later this year its HP EVI (Ethernet Virtual Interconnect) software. EVI will take what has been a complex, months-long project and reduce it to a "single touch" task that takes just minutes, Shaikh said. EVI is a feature coming to HP's 12500 Switch Series that will ship on future switches and be available free to current customers. It can link as many as eight data centers.

Moving VMs across a data center requires switched Layer 2 networking, but most wide-area networks use Layer 3 routing. To overcome this barrier, EVI creates a tunnel through the Layer 3 network by encapsulating the packets traveling between the data centers, Shaikh said. Rival Cisco already has software that can do this, called OTV (Overlay Transport Virtualization), but it charges extra for that software, Shaikh said.

Another software enhancement to the 12500 switch, called MDC (Multitenant Device Context), allows for segregating the resources of multiple tenants in a virtualized environment without buying separate switches. This secures the data and applications of one department or cloud service customer from other tenants.

It's possible to do this now, but it typically requires a separate physical switch for each tenant, Shaikh said. Other methods, such as multiple virtual LANs, don't guarantee the security that's needed, he said.

MDC can create separate logical switches within a 12500 switch, each dedicated to one tenant. The switches are completely isolated from each other, according to Shaikh. This has the same effect as setting up separate switches but reduces hardware cost and complexity, he said. MDC also works with EVI, so multiple tenants can take advantage of resources across many data centers, he said.

HP is also set to release a new product next month, called StoreVirtual VSA, for virtualizing storage management. The software is based on VSA (virtual storage appliance) technology from LeftHand Networks, which HP acquired in 2008.

 

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