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KVM vs Serial Management

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In general, the choice between KVM and serial management has to do with the customer and how they want to manage the equipment and whether the device to be managed has serial or KVM ports.

  • If the equipment only has a serial port, like networking or telecom equipment, then you would use serial.
  • For Linux servers, you could use KVM or serial depending on the user’s preference. For windows machines mostly KVM is used, but there is also a serial interface.
Raritan_serial consoles_listing-dominion-sxiiSerial only provides a command line interface (CLI) so it doesn’t require much IP bandwidth and can be very fast especially over low bandwidth lines. Serial console servers are less expensive because they are simpler devices. Serial has some cool features where you can cut and paste to and from the server. It also can log the users’ session and monitor the system log even when the user isn’t connected.
Raritan_kvm over ip_listing-kxiiiKVM over IP will take up more bandwidth, but provides a graphical user interface that is generally easier to use. KVM over IP provides access to the BIOS level. It also supports virtual media which is a very powerful feature to copy files back and forth, load software, and even boot an image remotely. IP KVMs are more expensive because they are more complicated.

~André

Pictured: Raritan Serial and KVM-over-IP consoles

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