vCenter High Availability (vCenter HA) protects vCenter Server against host and hardware failures. The active-passive architecture of the solution can also help you reduce downtime significantly when you patch the vCenter Server. You create a three-node cluster that contains Active, Passive and Witness nodes. vCenter Architecture Overview A vCenter HA cluster consists of three vCenter Server instances. The first instance, … Continue reading vCenter High Availability
This article provides information on recovering the parent virtual machine (and snapshot), when linked clone virtual machine is working and still exists in the pool. This can happen when the parent (golden/master, whatever you call it!!) virtual machine and snapshot of the pool is corrupted, deleted or is inaccessible. Resolution 1. Determining the MOID of … Continue reading Recovering existing linked clone parent/master virtual machine from replica
There may be times when you see some vSAN objects which are in an inaccessible state.Try to "Repair the absent or degraded vSAN objects immediately" or "Purge Inaccessible VM swap Objects" from VMWare vSAN Skyline Health option,and check if that helps. There's a few reasons that objects could have been inaccessible, one being orphaned objects … Continue reading Deleting Inaccessible Objects from vSAN
After you have finished upgrading the vSAN hosts, you can perform the disk format upgrade. Prerequisites Verify that you are using the updated version of vCenter Server.Verify that you are using the latest version of ESXi hosts.Verify that the disks are in a healthy state. Navigate to the Disk Management page in the vSphere Web Client to verify the object status.Verify that … Continue reading Upgrade vSAN Disk Format Using vSphere Web Client
VMware vCenter Update Manager fails to upgrade the ESXi host at 92%.Cannot upgrade from ESXi 6.0 to ESXi 6.7 using the ISO image. OSError: [Errno 39] Directory not empty: /bootbank/state.XXXXXXX (where XXXXXXX is a number) To resolve this issue, ensure that the /bootbank/state.XXXXXXXX directory is empty. To ensure the /bootbank/state.XXXXXXXX directory is empty: Log in to the ESXi using SSH with … Continue reading Upgrading a VMware ESXi host fails with the error
What does the vSAN HCL Health – vSAN HCL DB up-to-date check do? This health check verifies the VMware Compatibility Guide (VCG) database used for the HCL checks is up-to-date. These VCG checks are not done against the HCL on the VMware website, but rather against a copy stored on the vCenter Server. The initial … Continue reading vSAN HCL DB up-to-date health check is red for the fresh deployment
To remove and recreate a disk group using esxcli commands: Log in to the ESXi host that owns the disk group as the root user using SSH.Run one of these commands to put the host in Maintenance mode.Note: VMware recommends using the ensureObjectAccessibility option. Failure to use this ensureObjectAccessibility mode or evacuateAllData mode may result in data loss. Recommended:Ensure accessibility of data:esxcli system … Continue reading How to manually remove and recreate a vSAN disk group using esxcli
As more and more customers move towards a model of non-persistent VDI specially during the pandemic era and more and more companies moving towards work from home model, they start to realize the benefits this approach has over persistent VDI. Non-persistent VDI allows IT to easily set up pools of desktops that can revert back … Continue reading Configuring Microsoft Outlook .OST files using VMware App Volumes and DEM solution
While upgrading the vCenter server to vCenter server version 6.7 we faced an error with the NTP configuration. Needless to say the upgrade failed and the below error was seen on the screen. This issue comes when source vCenter is configured with external NTP server however the configuration to destination (upgraded vCenter VM) doesn’t save … Continue reading vCenter Upgrade to 6.7 fails with NTP error.
After deleting snapshots on a VM either by deleting an individual snapshot or selecting "Delete All" snapshots, you may see the following warning for the VM, stating that disk consolidation is needed. "Virtual machine disks consolidation is needed" This can occur when a snapshot has been deleted from the web console but the underlying disk files … Continue reading VMware Snapshot Consolidation error: Unable to access the file since it is locked.