If the VM is running, VM performance can degrade during this operation. You can see the task progress in the task panel at the bottom of the VMware vSphere Client interface. Wait until the VMware disk consolidation is complete and the logs are cleared. Note: If there is a concern that some data can be lost during VMware disk consolidation, make a VMware VM backup, for example, copy all VM files to another folder on a datastore and then perform VMware disk consolidation. Are you sure you want to continue?Ĭlick Yes to confirm and consolidate virtual machine disk files. This operation consolidates all redundant redo logs on your virtual machine. To fix the virtual machine consolidation needed status, right click the VM name in the VMware vSphere Client and in the menu that opens, click Snapshots > Consolidate. Backup applications are unable to quiesce disk without using snapshot techniques to make a consistent backup of a running VM.īasically, you should restore the consistency of VM disk files. This may occur if a backup application did not finish a backup job and locked the snapshot (backup applications can create a temporary snapshot of a virtual machine when running a backup). ![]() Snapshot files are locked by a third-party application, for example, a backup application.Connection issues between an ESXi host and vCenter.If the snapshot size is large or times out, snapshot consolidation can fail. Low performance of a storage system attached to an ESXi host on which a VM is running.If there is less than 1 GB of free space on the datastore, this error may occur. Not enough disk space on the VMFS datastore to consolidate VM snapshots and consolidate virtual disk files.The most common causes for the virtual machine consolidation needed status: One of the common reasons for this error message is incorrectly deleting a VM snapshot, which can leave VMDK files related to snapshots and log files on the datastore (for example, after you performed the Delete All or Delete operation for VM snapshots). The VMware virtual machine disks consolidation is needed error message is displayed in the VM Summary tab in the VMware vSphere Client (screenshot below). Possible Reasons for the VMware Disk Consolidation Error Remember that VMware recommends using no more than 32 snapshots per VM. ![]() Storage space is cleaned after you consolidate virtual machine disk files. When you perform VMware disk consolidation, data from delta disks is merged to a single disk, and no redundant data is left on the datastore where this VM’s files are located. When the chain of snapshots and related virtual disk files becomes large, performance degrades. As a result, redundant data is present in the virtual machine storage because each delta disk contains all changes made as compared to the previous delta disk state, and the parent disk remains unchanged. When you take a snapshot, delta disks are created and changes are written to the appropriate delta disk (the latest delta disk by default, until one of the previous snapshots is selected to restore the virtual machine). You can initiate disk consolidation on demand to avoid performance degradation and other issues. Virtual disk consolidation is the process of merging virtual disk files created after taking VM snapshots. DISCOVER SOLUTION What Is VMware Disk Consolidation?
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