iscsi SAN with LACP

[parityman]

Hi all,

i'm planing a new infrastructure with Open-e as SAN Backend and PVE als virtualization hosts. 1GB Ethernet is to slow, so instead of using 10GbE i ask myself if Link Aggregation (with 4 Ports for example) would increase the throughput to my SAN. Wikipedia says, LACP balances load by mac-addresses -> connections initiated with the same mac use only one NIC. If i create 10 VMs on my PVE-Node, and every Node has a iscsi disk, all iscsi commands will send by my PVE-Node, right? So, all 10 Nodes uses only one NIC to communicate with the SAN? That would be a huge Problem. Any Hints for me?


Thank you!

 

[parityman]

could some delete the [SOLVED] tag? it's not solved (my mistake)

 

[maestro7879]

Sounds like you need multipath to utilize all of the 1GB paths. http://pve.proxmox.com/wiki/ISCSI_Multipath

 

[GT1]

yes, you have to use mpio for your iscsi. however keep in mind there's a threshold after which the infrastructure becomes too complex, costly, unmanageable or unreliable in terms of cabling, or finally the performance delivered doesn't cope with the demand anymore.
so, if you plan something new, go 10G.