[DRBD-user] 10Gb ethernet ?

Lee Christie Lee at titaninternet.co.uk
Thu Jun 19 14:03:11 CEST 2008


> But you have tested the raid-0 doing a lot more?

Around 300-400MB/s if I recall...

> Do you have tested both nodes with iperf?

No.

> This card have a problem, it's not fault tolerant, and that it's one 
> advantage to Quad NIC Gbit Ethernet.

This may provoke a strong reaction ;) but in 8 years of running a
hosting company I've never seen a NIC break in a running server. We use
multiple adapters to give fault tolerance over the switches they are
connected to , not themselves.

In any event, I'm no expert on channel bonding, but in a 2-server
configuration, where the Ips and MAC addresses are fixed at either end,
how can you use all 4 channels ? I was always under the impression that
the bonding used an algorithm based on src/dest IP/Mac to choose which
link to send data down, so in a point to point config it would always be
the same link. 

We're using 2 nodes that have normal Gb-e to multiple switches using
LACP for resilience, but the drbd and heartbeat will be done over the
10Gb-e adapters, no switches just point to point fiber.

> With one Gbit ethernet, you should get about 120MB/sec, at 
> least i get it. You are mostly doing one Gbit.

Bursts to over 200MB/s is well above Gig-e. Although yes, my average
transfer is not much above Gig-e.

-------------------------------------------------------------------------------

This email may contain legally privileged and/or confidential information. It is solely for and is confidential for use by the addressee. Unauthorised recipients must preserve, observe and respect this confidentiality. If you have received it in error please notify us and delete it from your computer. Do not discuss, distribute or otherwise copy it. 

Unless expressly stated to the contrary this e-mail is not intended to, and shall not, have any contractually binding effect on the Company and its clients. We accept no liability for any reliance placed on this e-mail other than to the intended recipient. If the content is not about the business of this Company or its clients then the message is neither from nor sanctioned by the Company. 

We accept no liability or responsibility for any changes made to this e-mail after it was sent or any viruses transmitted through this e-mail or any attachment. It is your responsibility to satisfy yourself that this e-mail or any attachment is free from viruses and can be opened without harm to your systems.




More information about the drbd-user mailing list