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Hi,
How to measure throughput between open-e and xenserver to check that lacp works correct. I configured bond (802.3ad) interface on open-e and XenServer (active-active),but under virtual machine I checked disk read/write and I had only:
read - 121 MB/s
write - 85.8 MB/s
For proper LACP bonding, both ends need to support the 802.3ad protocol. And even then speeds are not simply added together. For example, a 2 NIC LAG will not provide 2GB in IO, but more likely provide 1GB RX, and 1GB TX(provided it is multiple TCP connections).
A better configuration for Xen would be MPIO. This can provide additional bandwidth and redundancy.
This can help: http://www.ieee802.org/3/hssg/public...er_01_0407.pdf
Hi Gr-R,
MPIO, you have mean multipathing, without any port link aggregation?
This is correct to use MPIO as MPIO provides multiple streams for I/O where a bond only provides a single stream. Also MPIO provides path failover as well.
Yes, MPIO will give you the aggregation you are looking for as well as redundancy. This can be done with multiple single paths, or multiple bonds.
Hi,
I read this article http://blog.open-e.com/bonding-versus-mpio-explained/ and as I good understood, when I have 2x1GbE NIC on server and storage DSS and run multipathing on my XenServer I should have bandwith ~2Gbit/s and theoretical throughput 200MB/s, correct?
This is correct.Quote:
Originally Posted by forall