Bereitgestellt von: Hewlett-Packard GmbH Division Storage Services / Hewlett-Packard GmbH Division Storage
In data centers worldwide, IT sprawl is reaching a breaking point, and managing the proliferating data center resources has become arduous.
Virtualization is fueling this sprawl, spurring dramatic growth in the number of server instances and adding complexity to data center management. As data centers pack in more servers to support virtualization and boost application performance, they also must add more network switches. With virtualization, a physical server runs multiple virtual servers, called virtual machines (VMs); each VM requires a connection to a virtual switch (vSwitch). The vSwitches are connected to the physical network to allow communication among the VMs and the external network.
An increasingly important part of the data center infrastructure is what is sometimes referred to as the ‘virtual edge’: where the physical and virtual realms overlap, and where the virtualized network extends into the virtual server. The virtual edge blurs the traditional demarcation between network and server equipment and administration. The virtual edge architecture is composed of both server and network elements. It overlaps the server-network edge of the data center – i.e., the link between servers and the first tier of the network infrastructure. It is the virtual nature of the server-network edge that allows for the dynamic creation, deletion, and movement of network resources in support of the dynamic creation, deletion, and movement of virtualized servers.
Within modern data centers, each class of technology has typically been controlled by a different set of experts with different domain knowledge, each with their own complex, multi-step processes for deploying new infrastructure or implementing changes. Now, the advent of vSwitches – typically Layer 2 bridges within the server that allow VMs to talk to each other and optionally to the external network
– has created the need for even higher-level coordination between server and network managers.
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Publiziert: 01.12.11 | Hewlett-Packard GmbH Division Storage Services / Hewlett-Packard GmbH Division Storage