VAAI Thin Provisioning Block Reclaim/UNMAP Issue

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A performance issue has recently been discovered in the VAAI Thin Provisioning Block Reclaim mechanism introduced in vSphere 5.0. This feature allows an ESXi host to tell the array that a block on a Thin Provisioned datastore is no longer needed and can be reclaimed. This could be the result of a file delete operation, Read more...

Auto Deploy Plug-in Error with the vCenter Server Appliance (VCSA)

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Kyle Gleed, Sr. Technical Marketing Manager, VMware I love the vCenter Server Appliance (VCSA) and have been using it exclusively since early in the 5.0 beta.  Unfortunately, I’ve been a bit negligent about upgrading the VCSA server in my lab (still running a very old pre-release build) so I recently bit the bullet and updated Read more...

#VMworld 2011 – Copenhagen – #VSP1700, #GD21, #GD47

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Although it feels like VMworld 2011 in Las Vegas has only just finished, the European conference is already almost on us. I thought I'd put together a short note on what I'm involved in at VMworld 2011 in Copenhagen. #VSP1700 – vSphere 5.0 Storage Features co-presented with Paudie O'Riordan, Storage Escalation Engineer with EMEA GSS. Read more...

vSphere 5.0 CLI Reference Poster

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Kyle Gleed, Sr. Technical Marketing Manager, VMware During VMworld 2011 in Las Vegas we handed out some cool PowerCLI and vCLI reference posters.  They were a hot commodity and just in case you missed out you can get the PDF version from the link below.  You can also get the PowerCLI poster here. Download VMware Read more...

Storage I/O Control Enhancements in vSphere 5.0

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Storage I/O Control (SIOC) was introduced in vSphere 4.1 and allows for cluster wide control of disk resources. The primary aim is to prevent a single VM on a single ESX host from hogging all the I/O bandwidth to a shared datastore. An example could be a low priority VM which runs a data mining Read more...

SRM Product Management Survey

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The SRM Product Management Team has put together a customer survey to better understand current SRM deployments and to help drive future product direction. We would really appreciate it if you could take a few minutes and complete the survey. It should only take about 10 minutes, and would really help us drive SRM to Read more...

Storage DRS Affinity & Anti-Affinity Rules

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By now you should be well aware that one of the major storage and resource management enhancements in vSphere 5.0 is Storage DRS. What was one of the motivations behind developing this feature? For some time we have had the Distributed Resource Scheduler (DRS) feature in vSphere, and this managed the initial placement and load Read more...

How often does ESXi write to the boot disk?

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Kyle Gleed, Sr. Technical Marketing Manager, VMware A couple weeks back I wrote about booting from USB/SD and made the comment that ESXi will routinely save the host configuration to the boot device once every 10 minutes.  This generated a lot of questions and it quickly became evident that people wanted to understand more about Read more...

Using the Compatibility Guide to check Guest OS support on ESXi

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I recently learned about an issue with the VMware Compatibility Guide that is creating some confusion.  The problem (demonstrated in the screen shot below) is when when using the compatibility guide to search for Guest OS support on ESXi there is no option for selecting versions prior to 5.0. What happened is prior to vSphere Read more...