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Don’t use VMware Raw Device Mapping (RDM) for performance, but ..
Till today everywhere I looked recommended using RDM over VMFS for performance (when a higher I/O is required), though today while studying for my VMware Design Exam I have got my hand on the “Performance Characterization of VMFS and RDM Using a SAN” document by VMware. The interesting executive summary of the document is copied up…
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VMware ESX & ESXi Connections & ports
While preparing for my VMware Design Exam, I have stumbled upon this great pdf that document VMware ESX & ESXi connections & ports in details. It even cover the connections & ports for VMware additional components like VMware Update Manager & vCenter Converter. Although many documents do the same, what got my attention is all this…
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ESX host disconnect from VirtualCenter or vCenter Server
VMware ESX host can disconnect from VirtualCenter & have a problem connecting to it again for many reasons. Below I will cover few ways to diagnose the problem, few common resolutions to this issue. In these cases usually the first thing you want to do is to log on through ssh, vcli, or directly on…
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VMware ESX How to enable SNMP
As many VMware ESX monitoring tools are hitting the market place, and with the tend of these tools being dependent on SNMP (example: Starwind Free VM Monitor for VMware ESX), the more I am getting the question on how can I enable SNMP on my VMware ESX Server.. The instruction below will cover how to…
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How to enable VMware EVC on VMware vSphere & VI3 without downtime
If you don’t know what is VMware EVC or you need to find out more about it, please look at my last post VMware EVC enhanced VMotion Compatibility enable VMware VMotion across CPU generations Ok, if you had read that and now wondering how to get it setup without having to shutdown your virtual machines.…
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VMware EVC (Enhanced VMotion Compatibility) enable VMware VMotion across CPU generations
Everyone who had been using VMware for a while, would appreciate VMware VMotion. Actually VMware VMotion have always been a distinguished feature of VMware ESX servers. Despite of VMotion has always been a great feature, people using it at earlier stages used to have a tough time when having to use it across different CPU generation. That meant companies had…
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VMWare ESX: A general system error occurred: Ufad server is not running.
It seems to me many people are facing the same ugly error when they try to convert a physical server to a virtual server using VMware Consolidation Planning tool. The error usually get after the tool has finished annalyzing the physical machine & it was deemed ‘Ready for consolidation’ with Confidence ‘high’. When the user…
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Changing the VLAN ID of a ESX Service Console using Command Line
A good amount of ESX admins ask on dialy basis how to change the VMware ESX Service Console Vlan using command line. As I decided to save time by writing the steps for these kind of questions to send it to others when asked. I will document these commands in here: First of all check…
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VMware ESX & USB & Parralel dongles
When ever I attend a VMware presentation, one of the most common question “How would we handle our USB or parralel licenses dongles in VMware ESX.” Are they supported? Can I get them to work some how? What make the question more critical that most presenters are from a sale or pre-sale background and does…
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VMware ESX & Virtual Center 3.5 upgrade guide
It might be the time for you to upgrade your VMware ESX servers to VMware 3.5U3 and Virtual Center 3.5U4. You might even just want to upgrade to any version of VMware ESX & vCenter 3.5. Then this guide linked to below is all you need. It has a great step by step instruction of…
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VMWare ESX: How to recover your VMFS partition table
You might wake up for a bad day after a power outage or a storage failure. You thought it was over, after you had succeeded to bring all your machines back up and running. In few minutes you found out that some of your virtual machines are missing. After a small investigation you found out…
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Top 10 VMware VMworld 2009 Videos
Finally back home :). Don’t get me wrong Cannes was great, though nothing like being back home. OK for people who did not get to join us in Cannes, I had for them a free ticket for the replay :). I wish I could afford to give our visitors a VMworld pass for free, but…
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VMworld 2009 announce vSphere, vCenter Server Heartbeat, VMware vShield Zones
VMworld Europe 2009. VMware has used the VMworld Europe 2009 to announce two new products that will be available this year: 1- vCenter Server Heartbeat: Comes to solve the problem arising from a possible collapse of the server that manages the VMware virtualized platforum, specifically vCenter Server earlier known by Virtual Center. The vCenter Server…
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VMware ESX – VMware VMotion
What’s VMware VMotion? VMware VMotion enables the active migration of running virtual machines from one physical server to another without interruption of service, availability of service and complete integrity of transactions. VMware VMotion moves running virtual machines from one physical server to another while maintaining service availability. VMware VMotion allows IT organizations to: Perform live…
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VMware ESX Healtcheck script
Before asking VMware or your vendor for a health check on your VMware enviornemnt you can use the free Healthcheck script as an early start. Actually its a great idea to automate it to send you and update of your enviornment status weekly. Below is a bit more of the VMware Healthcheck script as posted…