RE: 10GB Ethernet Cards

I think it would only drag down the switches if someone was sending lots of data TO the iSeries. If most traffic is going out and what is being sent would never exceed 1GB going to a 10GB switch port then the switch would not have a problem. I am also assuming you are not running any internal Intel servers that is sharing the 1GB bandwidth. If you had many internal Intel card servers then the 10GB could be a good option if you needed to give each server 1GB of bandwidth.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Roberto José Etcheverry Romero
Sent: Monday, August 27, 2012 9:26 PM
To: Midrange Systems Technical Discussion
Subject: Re: 10GB Ethernet Cards

In that case i suppose the network guys want the cards up to 10gb to avoid it dragging down the switches, even though AFAIK switches dont care the speed of each link, just the total switching bandwidth...

Best regards,

On Mon, Aug 27, 2012 at 10:18 PM, Sam_L <lennon_s_j@xxxxxxxxxxx> wrote:

Yes, good question. The network guys are trying to plan replacing old
switches (I think) and I guess the question of the iSeries came up.

How can I measure utilization on the iSeries side? (I suppose it is a
bit much to hope for a WRKACTIP or WRKTCPACT command for network
cards?)

The biggest iSeries volume that that goes over the network is Mimix
replication to our remote back up box. That fluctuates wildly
depending on what we are doing in batch, though it generally doesn't
take too long to catch up. I imagine they will try to update that bit
of the network as well.


Sam


On 8/27/2012 7:52 PM, Mike Cunningham wrote:

I don't know costs as we run 3 1GB NICs but a gotcha might be spending money for no real gain. Are you currently running your current nics anywhere near 80% utilization? Do you store and send any large files in some burst method (like sending a 100GB CAD drawing stored in the IFS). If you are not using the 1GB bandwidth going to 10GB isn't going to get you better performance. And the path to the requestor would need to be 10GB all along the way.

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