I'm currently testing iSCSI with Intel Pro 1000 PT DualPort adapter. The performance is pretty well but is it possible to combine both ethernet ports to have a true 2Gbit link for the boot device? Intel documentation doesn't explain this.
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What you want is multipath i/o (MPIO). There are different ways to configure this based on OS and san type and You're not giving us a lot of info to work on. Here's an article about iscsi mpio using microsoft's iscsi initiator and a Dell san. It should at least get you started.
http://www.delltechcenter.com/page/MPIO+to+PowerVault+MD3000i+with+Microsoft+iSCSI+Initiator
This is also good reading on why you shouldn't use link aggregation with iscsi:
Jason Berg
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+1, If the NIC supports iSOE it might have built in MPIO, I know Broadcom NICs do (haven't used Intel, but expect they do). If there isn't iSOE then it's an OS function and Windows definitely support MPIO once enabled; most *nix OSes do as well. – Chris S Aug 08 '10 at 22:33
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That's typically through a combination of OS software and networking equipment to accomplish that - a.k.a. channel bonding, ether channeling, trunking, etc.
user48838
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1All the terms you listed are synonyms for link aggregation, which should not be used with iscsi. What did you mean to indicate by saying "etc"? – Jason Berg Aug 08 '10 at 22:30
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"a combination of OS software and networking equipment" Are you saying/stating MPIO is anything different? – user48838 Aug 09 '10 at 00:50