[CentOS] 10 GBASE-T

Thu Jan 14 16:41:35 UTC 2010
Pasi Kärkkäinen <pasik at iki.fi>

On Thu, Jan 14, 2010 at 06:49:07AM -0800, nate wrote:
> Pasi Kärkkäinen wrote:
> > Have you paid attention to this? How big is the difference nowadays?
> > Or I wonder if it was just on some specific product..
> Depends on the product, my blog mentions a new product that draws
> less power on 10GbaseT vs fiber.
> As for latency I'm sure it's a bit more, but for most applications
> are you really going to be able to tell a difference? I can understand
> if your doing stuff like RDMA, but for normal networking, NFS, iSCSI,
> virtualization etc, I really can't imagine anyone being able to
> tell a difference, especially for those currently running 1GbE.

Exactly. Gigabit ethernet is already enough for many systems today, and
even there the bottleneck is often the disks, not the network.

> The latency on my storage systems is measured in milliseconds not
> microseconds..

Yep. It might be only important for RDMA stuff.

> The biggest knock to 10GbaseT was it was late to the 10GbE party.

Then again 10G isn't very widely deployed yet (in the datacenter), 
so 10GBaseT will definitely have a place for it.

-- Pasi