Tag Archive: vCenter Server 5.1

ESXi 5.1 VMFS HeapSize configuration using PowerCLI

There are a few of my customer still running vSphere 5.1 U1 and one of them reported an issue related to the VMFS Heap Size (VMFS3.MaxHeapSizeMB) configuration a few days ago. Keep in mind that my customer upgraded to U1 from a previous vSphere 5.1 version meaning that the old VMFS3.MaxHeapSizeMB was retained at 80 MB …

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vCenter Server database and MSCS issue in vSphere 5.1

A couple of months ago a customer of mine changed their vCenter Server database location from a standalone MSSQL 2008 SP2 installation to a Microsoft Cluster Service (MSCS) based MSSQL 2008 R2 SP2 installation. The intention is very good and it all comes down to increase the availability of the MSSQL server since you can …

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vCenter Server task – Upgrade vCenter Agents on cluster hosts

One customer contacted me a week ago with a question regarding a vSphere vCenter Server problem they have seen after upgrading to vCenter Server version 5.1. I recall i had the same problem back in 2012 when upgrading to vSphere 5.1 and i thought it was worth to create a blog post about it, even …

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Reset vCenter Single Sign On password

A customer of mine lost their password for the vCenter Single Sign On (SSO), version 5.1, admin@system-domain account. It is possible to reset the admin@system-domain account if you know the password configured during the installation. However, my customer had not changed the password since the installation meaning there is no supported way of changing the …

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vCloud Director internal server error when deploying vApps

During VMware vCloud Director (vCD) vApp deployments using the latest versions of both vSphere (ESXi 5.1 and VMware vCenter Server 5.1.0b 947939) and VMware vCloud Director (5.1.1 868405) i got the below vDC error message: The vCD cell logs located in the /opt/vmware/vcloud-director/logs directory told me e.g. “vCenter Server is unresponsive” These errors made me start investigating …

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