Comments on: Bonding versus MPIO explained http://blog.open-e.com/bonding-versus-mpio-explained/ Open-E - Enterprise Class Storage OS For Every Business Mon, 07 May 2012 20:13:37 +0000 hourly 1 http://wordpress.org/?v=3.1.3 By: TooMeeK http://blog.open-e.com/bonding-versus-mpio-explained/#comment-31763 TooMeeK Mon, 04 Jul 2011 23:03:34 +0000 https://blog.open-e.com/?p=483#comment-31763 eee... what? with good switch and bonding mode round-robin (just like iSCSI MCS does) You can get raw performance at twice of Gigabit link (or more) for NFS for example. Check this by iperf, should get 1,8-1,9Gbit/s even with single connection. It utilises all slaves. But better solution is to always have redundand link (2 switches at least) and use different bonding mode (balance-alb) or many paths for iSCSI. This means seaparate IP for all network cards. eee… what? with good switch and bonding mode round-robin (just like iSCSI MCS does) You can get raw performance at twice of Gigabit link (or more) for NFS for example. Check this by iperf, should get 1,8-1,9Gbit/s even with single connection. It utilises all slaves.
But better solution is to always have redundand link (2 switches at least) and use different bonding mode (balance-alb) or many paths for iSCSI. This means seaparate IP for all network cards.

]]> By: Bruno PELZER - CELEM http://blog.open-e.com/bonding-versus-mpio-explained/#comment-4783 Bruno PELZER - CELEM Wed, 16 Mar 2011 13:25:59 +0000 https://blog.open-e.com/?p=483#comment-4783 If I use MPIO (3 gigabit NIC) and I use cluster Failover for my iSCSI connection, my gigabit replication link is the bottleneck and performances are about 100Mbps instead of 300 Mbps... If I disable cluster failover my performance is better (about 300Mbps). How can I get very good performances (300Mbps) WITH cluster Failover enabled ? I have a solution : using 10Gigabit ethernet link between 2 Open-E SAN (for replication link) but it's a very expensive solution... Do you have another idea ? If I use MPIO (3 gigabit NIC) and I use cluster Failover for my iSCSI connection, my gigabit replication link is the bottleneck and performances are about 100Mbps instead of 300 Mbps… If I disable cluster failover my performance is better (about 300Mbps). How can I get very good performances (300Mbps) WITH cluster Failover enabled ? I have a solution : using 10Gigabit ethernet link between 2 Open-E SAN (for replication link) but it’s a very expensive solution… Do you have another idea ?

]]> By: dan pugh http://blog.open-e.com/bonding-versus-mpio-explained/#comment-4633 dan pugh Tue, 14 Dec 2010 21:57:45 +0000 https://blog.open-e.com/?p=483#comment-4633 interesting, surely what you describe is different depending on circumstances lacp bonds together 2 x 1gb links and (assuming it is switch assisted) using single virutal mac address so 1 flow can = 200 mpio can = 200 when 2 flows but otherwise hits maximum with 1 flow of 100 network load balancing (adaptor teaming) is maxed out like mpio at 1-in and 1-out so 100 although there are several options for loadbalancing overall throughput is not increased unless the switch helps thats how i understood it anyway http://en.wikipedia.org/wiki/Link_aggregation "Network interface cards (NICs) trunked together can also provide network links beyond the throughput of any one single NIC" microsoft doesnt support adaptor teaming isci, but you can bond using lacp at the storage end. testing (lacp bonded iscsi with cisco switch in port-channel) ive just done seems to be slower with mpio, but the failover cluster validation seems happier with mpio could be wrong of course ;-) interesting, surely what you describe is different depending on circumstances
lacp bonds together 2 x 1gb links and (assuming it is switch assisted) using single virutal mac address so 1 flow can = 200
mpio can = 200 when 2 flows but otherwise hits maximum with 1 flow of 100
network load balancing (adaptor teaming) is maxed out like mpio at 1-in and 1-out so 100
although there are several options for loadbalancing overall throughput is not increased unless the switch helps

thats how i understood it anyway

http://en.wikipedia.org/wiki/Link_aggregation

“Network interface cards (NICs) trunked together can also provide network links beyond the throughput of any one single NIC”

microsoft doesnt support adaptor teaming isci, but you can bond using lacp at the storage end.

testing (lacp bonded iscsi with cisco switch in port-channel) ive just done seems to be slower with mpio, but the failover cluster validation seems happier with mpio

could be wrong of course ;-)

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