Category Archives: Configuration

vCenter Server Storage Filters

Posted on May 17, 2016 by Calvin Scoltock

vCenter has 4 Storage Filters: – RDM Filter VMFS Filter Host Rescan Filter Same Host Transports Filter These filters affect the actions vCenter takes when scanning storage as follows:- RDM Filter When you attempt to add a RDM to a … Continue reading →

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RDM Path Selection Policy (PSP) with Microsoft Clustering

Posted on October 6, 2015 by Calvin Scoltock

Prior to vSphere 5.5 the Round Robin Path Selection Policy (VMW_PSP_RR) is not supported for the shared disks of a Microsoft cluster. You may find that the ESXi multipathing claim rules are set so that when the RDMs are discovered … Continue reading →

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VMware Paravirtual SCSI Adapter (PVSCSI)

Posted on September 23, 2015 by Calvin Scoltock

For virtual machines with high disk I/O requirements, such as Tier 1 SQL Servers, you should consider configuring the VM with the VMware Paravirtual SCSI Adapter (PVSCSI). The PVSCSI adapter was introduced in ESX/ESXi 4.0 and is virtualisation aware. It … Continue reading →

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Windows Server 2012 R2 VM Network Adapter

Posted on April 22, 2015 by Calvin Scoltock

When creating a Windows Server 2012 virtual machine the network adapter type defaults to E1000. I have seen reports of this dropping network connections and packet loss on Windows Server 2012. There is a newer emulated network interface available for … Continue reading →

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Editing vCenter VM Settings with Hardware Version 10

Posted on July 3, 2014 by Calvin Scoltock

When using vSphere 5.5 if you upgrade your vCenter server to VM Hardware Version 10 then you will only be able to edit it via the vSphere Web Client. If the setting you are need to edit requires the VM … Continue reading →

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Repeating ADAM_VMwareVCMSDS Error Every Minute in Windows Active Directory Web Services Log

Posted on October 29, 2011 by Calvin Scoltock

I have seen the following error repeat EVERY minute in the Windows Active Directory Web Services Log on Windows 2008 R2 Servers running VMware vCenter 4.1. “Active Directory Web Services encountered an error while reading the settings for the specified … Continue reading →

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ESXi4.1 vMotion using incorrect vmnic

Posted on June 16, 2011 by Calvin Scoltock

I have a number of esxi 4.1 update 1 hosts configured as follows: – vSwicth0 – vmnic0, vmnic1, vmnic2, vmnic 6 – all active VMKernel Port – Management – enabled for Management – Active vmnic0, Standby vmnic2, unused vmnic1 and … Continue reading →

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Setting Default Gateway on vSphere 4

Posted on March 20, 2010 by Calvin Scoltock

I had an issue recently where I had installed ESX4 on a number of hosts but had not been allocated IP addresses for them.  So I installed them using DHCP.  Later when I had been given the IP addresses I … Continue reading →

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