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Serial Console Servers

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    Raritan Dominion SX II

    Enterprise Serial Console Servers
    4 to 48 Multi-Platform Servers
    Dual-AC, Dual-DC, Dual Gigabit LAN, and Modem Versions
    Complete CLI access and control via SSH, Telnet and GUI
    Flash memory, up to 8 GB, for storage and logging
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    Raritan Dominion DSX2 Enterprise Serial Console Servers - 4 to 48 Port, Dual-AC, Dual-DC, Modem, Dual-LAN
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    Avocent ACS6000 Serial Console Manager, - RADIUS, TACAS+, LDAP/AD, NID, RSA SecurID

    Avocent ACS 6000

    Next-generation Serial Console Manager
    4 to 48 Multi-Platform Servers
    Dual-AC, Dual-DC, Dual Gigabit LAN, and Modem Versions
    Local, RADIUS, TACACS+, LDAP/AD, NIS and Kerberos Authentication
    Two-factor authentication (RSA SecurID)
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    Raritan Dominion KSX II

    Serial & IP KVM Management Switch
    4 to 8-Port KVM & 4 to 8-Port Serial
    Dual Gigabit Ethernet and Built-in Modem
    Complete CLI access and control via SSH, Telnet and GUI
    Up to 256-bit AES Encryption With LDAP and Radius Support
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    Raritan Dominion DKSX2 Serial IP KVM / Console Server - 4 to 8 Port, 256 Nit AES Encryption
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    NTI SERIMUX Serial Console & SSH Console Switch - 8 to 32 Port - Environmental Monitoring

    NTI SERIMUX

    Serial Console & SSH Console Switches
    8 to 32 Servers / Computers
    Ethernet Control, Environmental Monitoring, Single & Dual-AC or DC Options
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    Aten SN3101 1 Port Serial Console Server - RS232, RS422, RS485

    Aten SN3101

    1 Port Serial Console Server
    3-in-1 Device Supports RS-232, RS-422 and RS-485 Data Transfers
    High Security Via 128-Bit SSL Encryption
    Choice of Power Input: AC-DC Adapter or DC Airect
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KVM vs. Serial Console Server

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 it 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.

Serial 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.

KVM over IP will take up more bandwidth, but provides a graphical user interface that is generally easier to use. KVM 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. KVM is more expensive because it is more complicated.