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General Chat Thread, Quick Server multiple Network Card Question ???? in General; Hi all, Just having a tidy up behind our server rack and have a question that I have always wondered ...
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    Quick Server multiple Network Card Question ????

    Hi all,

    Just having a tidy up behind our server rack and have a question that I have always wondered about...

    Our DC`s among other servers have 2 network sockets. Originally they were both connected up to the main switch with 1gbit connections...
    They "were" assigned different IP addresses but if I remember there was always a warning about conflicting IPs and we ended up just running one 1gbit connection to each server.
    Our mail server if i remember has 5 NICs !!!! ? At one point I teamed them all up but then went back to just one...

    What is correct practise here please? What do you guys do?
    Thanks in advance

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    jamesreedersmith's Avatar
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    Teamed with failover generally.

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    ChrisH's Avatar
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    I would usually team them or they have to be on different subnets. Watch your DNS registration as you may not want all of them to have a DNS entry, depending on your routing etc it could mess things up.

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    Thanks for replies,

    So apart from redundancy on NIC failure, there are no performance benefits to having each NIC connected??
    Cheers

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    jamesreedersmith's Avatar
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    If you team them (and your switch supports it) you will get greater throughput.

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    mthomas08's Avatar
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    Just adding that usually a server will rarely reach capacity even in the peak times on the Networking. I do not think I have ever seen one of our servers struggle on that level. I have occasionally though had to switch from one port to another on our older servers due to one port failing. Not on our newest ones though.

    Also useful as a Bridge, we have one server with a NIC dedicated through a VLAN for an outside link through our service provider (bit complicated). That NIC is unreachable from internally, only the server it self can access it.

    Usually it's HD's/Memories and rarely processors.

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    Mcshammer_dj's Avatar
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    teamed and set to seprate switches to allow for increased levels of redunancy. this is linked with 2 power supplies per server and our computer room having 2 seperate ring mains. This means that even if an entire ring fails our servers will stay working

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