(If you’re having persistent problems with your virtual machine configurations and SQL Server performance, Jonathan can help you fix it – fast! Click here for details.) In the last month I have had to explain how to interpret CPU Ready Time information for SQL Server VMs running on VMware to a number of people. The [...]
Jonathan Kehayias
The Rambling DBA
CPU Ready Time in VMware and How to Interpret its Real Meaning
Posted on: November 29, 2012 2:00 pm
Clustering SQL Server on Virtual Machines (Round 2)
Posted on: November 29, 2012 1:38 pm
Recently there was lengthy discussion on the #sqlhelp hash tag on Twitter about clustering SQL Server on VMs and whether or not that was a good idea or not. Two years ago I first blogged about this same topic on my blog post, Some Thoughts on Clustering SQL Server Virtual Machines. If you haven’t read [...]
Looking at External Disk Performance using USB 3.0 and eSATA with SSD
Posted on: February 26, 2012 12:47 am
I recently did some drive upgrades in my personal laptops and as a result I had a couple of SSD drives sitting around that I wanted to make use of. A few weeks ago I purchased a new OCZ Agility 3 240GB SATA III SSD from Newegg when it was on sale and at the [...]
Building a Completely Free Playground for SQL Server – 3 – Creating the Failover Cluster Nodes and Configuring the iSCSI Environment
Posted on: September 8, 2011 10:58 pm
Continuing our weekly series on building a free playground for SQL Server, this week we’ll take a look at configuring our iSCSI Target to create the LUNs necessary to build a SQL Server Failover Cluster, and then build out a two node SQL Server Failover Cluster in the environment. A number of really good comments [...]
Building a Completely Free Playground for SQL Server – 2 – Setting up Active Directory and the iSCSI Virtual SAN
Posted on: August 29, 2011 1:12 pm
To continue the build out of our Completely FREE Playground for SQL Server, we will begin by setting up an Active Directory Domain Controller and a separate iSCSI Virtual SAN, which are both requirements for setting up a SQL Server Failover Cluster. To make things easier to follow, this post will break these two tasks [...]
Understanding Non-Uniform Memory Access/Architectures (NUMA)
Posted on: May 24, 2011 1:00 pm
Lately I have been doing a lot of work on SQL Server’s that have had 24 or more processor cores installed in them. Many of these systems utilize hardware non-uniform memory architectures, or NUMA, while a few of them were not. This led me into a good bit of additional research into the differences between [...]
Parsing SQLIO Output to Excel Charts using Regex in PowerShell
Posted on: May 25, 2010 11:55 am
Today Joe Webb (Blog|Twitter) blogged about The Power of Regex in Powershell, and in his post he shows how to parse the SQL Server Error Log for events of interest. At the end of his blog post Joe asked about other places where Regular Expressions have been useful in PowerShell so I thought I’d blog [...]
