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ports are 22 (SFTP) 80 and 443, respectively.

Bandwidth Using System Center Virtual Machine Manager to create and manage virtual

machines can involve moving multi-gigabyte files across the networkfor example, when performing P2V migrations or migrating a virtual machine from one host to another or deploying a new VM from a template.

As a best practice, connect all the computers in a System Center Virtual Machine Manager configuration with at least a 100-MB full duplex Ethernet connection. When using a Gigabit Ethernet connection, more powerful processors than those that are recommended will further improve performance.

When extending System Center Virtual Machine Manager beyond the data center, such as in remote or branch office scenarios:

  • Consider adding System Center Virtual Machine Manager library servers to remote locations where there will be a need to provision virtual machines or templates or access ISO images.

  • Avoid performing file transfers across small or unreliable WAN links.

Network Traffic System Center Virtual Machine Manager performs periodic refreshes of the

library, hosts, and virtual machines. In very large virtual environments, the amount of traffic can become significant.

If using a Fiber Channel or Internet Small Computer System Interface (iSCSI) SAN, the network impact can be reduced by doing SAN transfers in lieu of network transfers. When a SAN transfer is performed, the LUN that contains the virtual machine is remapped from the source to the destination computer (instead of a

network file transfer being performed). Because of this, SAN transfers are much faster and are independent of the size of the files being transferred. When using iSCSI, consider the network traffic that will be incurred by using iSCSI connections with System Center Virtual Machine Manager.

Storage Considerations

System Center Virtual Machine Manager supports all forms of direct-attached storage (DAS) as well as Fiber Channel and iSCSI SANs. System Center Virtual

Machine Manager also supports N_Port ID Virtualization (NPIV) on a Fiber Channel SAN. NPIV makes use of the host bus adapter (HBA) technology that creates virtual HBA ports on hosts by abstracting the underlying physical port. This enables a single HBA port to function as multiple logical ports, each with its own identity. Each virtual machine can then attach to its own virtual HBA port


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