Vmotion is disabled software is not compatible

When software performs a backup, it can request transmission of only the blocks that changed since the last backup, or the blocks in use. Applications call VADP to request that the VMkernel return blocks of data that have changed on a virtual disk since the last backup snapshot.

Virtual machine storage must not be persistent or non-persistent independent disk, meaning unaffected by snapshots. In some cases, such as a power failure or hard shutdown while virtual machines are powered on, CBT might reset and lose track of incremental changes.

In vSphere 4. In vSphere 5. For more information, see Changed Block Tracking is reset after a storage vMotion operation in vSphere 5. Vmware B, This results in the backup tool being unaware which blocks have changed since the last backup.

An incremental virtual machine backup is not possible and a full backup is required. ESXi 5. This issue occurs due to heap exhaustion.

If a virtual machine with a large number of virtual disks reached an upper threshold, enabling CBT fails because of heap exhaustion. This issue also occurs with multiple virtual machines with CBT enabled. In case of Windows virtual machines with VSS enabled, taking a quiesced snapshot creates double the amount of memory overhead.

Finally, if the heap is close to exhaustion, performing a vMotion can also cause this issue as that process involves taking snapshots as well.

Note: The virtual disks can be spread across virtual machines or can be in a single virtual machine.? Proactively migrate virtual machines away from failing or underperforming servers. All ESXi hosts should have identical physical and connectivity configurations. Multiple high speed network adapters preferably 10 Gbps should be teamed together as Active Uplinks for vMotion. Use a secure private network for vMotion on vSphere 6. For vMotion that covers a wide geographical distance, the round-trip ping between the servers and hosts in the cluster must be less than ms.

What I mean here is that since there is no upgrade path from 5. After getting up to vSphere 6. If this is not completed prior to upgrading your upgrade may fail. When creating or updating a vSphere distributed switch in vSphere 6. When upgrading to VDS version 6. However, when upgrading to VDS version 6. Step 1: First we will review what version the current VDS is running by viewing the Summary tab on the Networking screen.

Once reviewed we will move to upgrading. Step 2: Here we click on the Upgrades Available link and can see an upgrade is needed. From here you can see the benefits that come with each VDS version. Once a selection is made, click Next to continue. Step 5: Once the switch upgrade completes, you can see the new version shown on the Summary tab of the Networking screen.

The VDS upgrade is now finished. Thats a wrap! From beginning to end of a vSphere Upgrade, component to component, screen by screen. I hope that this series has helped take some of the unknowns or complexity away from your vSphere Upgrade Journey. My job is to educate as well as help make things easier to understand and digest.

If these blogs have helped in anyway, please leave a comment. Please do not hesitate to post questions in the comments section of this blog or reach out to me directly via Twitter vCenterNerd. This message will close in seconds.