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This is a real beginners question, but what physical hardware do you need to link a server to a SAN?

An expansion card? Just a network port?

Thanks

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Depends on the SAN - if it's a Fibre-Channel SAN and you have enough host ports on the SAN itself then you just need a FC HBA and a fibre-pair; if there's not enough ports on the SAN then you need one or more FC switches. If it's an iSCSI SAN then you simply need either a spare network card or even use any you might already be using.

Let us know some more details and we'll be able to add more ok.

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Just to add a couple thoughts to the iSCSI setup. It's best to keep iSCSI SAN network separate from the rest of your network. Either via separate switches or VLANs. – 3dinfluence Mar 5 '10 at 15:37
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