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Control network description

The control network is for communication between devices and components. It does not have real-time media traffic or streaming/FTP media traffic. The control network traffic must be separated from the streaming/FTP network traffic and the media (iSCSI) network traffic. This separation may be provided by different subnets, VLANs, or physical switch fabrics. The control network and the streaming/FTP network, if on different subnets, may be on the same VLAN. The control network and the media (iSCSI) network must not be on the same VLAN. Static IP addresses with name resolution via host files are recommended for the control network.

The control network applies to both online, production, and nearline K2 SANs.

All the devices of the K2 SAN are on the control network. Stand-alone K2 clients can also be on the same control network.

Redundant K2 SANs have one control network with hardware separated into an A side and a B side. There is an A Ethernet switch and a B Ethernet switch. Switches are connected by InterSwitch Links (ISLs or trunks) to provide redundant paths for control network traffic. On a redundant K2 SAN, devices are on the control network as follows:
  • Shared Storage K2 client - The two control GigE ports are configured as a team. The control team shares a single IP address. One port of the team is on the A side and the other port of the team is on the B side.
  • K2 Media Server - Redundant K2 Media Servers with role of media file system/metadata server are balanced between the A and B sides. One server is on the A side and the other server is on the B side. K2 Media Servers with other roles, such as FTP server, are likewise balanced between A and B sides.
  • K2 RAID - When a K2 RAID device has redundant controllers, controller 0 is on the A side and controller 1 is on the B side.
  • Ethernet switch - For control and configuration, the A switch is on the A side and the B switch is on the B side

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