Oct 132015
 

networkcable

Have you ever wondered if that black box in your datacenter called the network is performing as well as it should be? Do you have random periods of time where normally fast data movement processes seem to take forever, but the diagnostics on your servers all seem fine? What about validating the network performance back and forth to your disaster recovery site? Let’s go through how to check the network to make sure that all is well, or generate some objective repeatable tests that you can bring to your networking group and ask questions with.

I frequently mention in my presentations a free utility that I use called iperf that you can use to validate your network performance. Several questions came up about where to get it and how to use it. Read on for a walk-through of how to use iperf!

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Nov 112013
 

networkcable

Have you ever wondered if that black box in your datacenter called the network is performing as well as it should be? Do you have random periods of time where normally fast processes seem to take forever, but the diagnostics on your servers all seem fine? What about validating the network performance back and forth to your disaster recovery site? Let’s go through how to check the network to make sure that all is well, or generate some objective repeatable tests that you can bring to your networking group and ask questions with.

In my SQL PASS Summit presentation from last month, I mentioned a free utility that I use called iperf that you can use to validate your network performance. Several questions came up about where to get it and how to use it. Read on for a walk-through of how to use iperf!

Continue reading »

May 162013
 

A while back Kendal Van Dyke (b | l | t) asked me a great question regarding the ideal VMware vSphere networking configuration for a SQL Server 2012 AlwaysOn Availability Group configuration. That’s a great topic for a blog post, so let’s go!

Normally, a fairly stock setup can work without any major issues, but in systems with heavier activity, these tips can prevent or fix potential networking issues that can lead to system instability.

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