Caution: VCHA user password

When VCHA is enabled, a new OS user “vcha” is created and used for the file based replication.

This morning I experienced an issue on one of my VCHA setups (but not the other) where replication was failing when I arrived into the office.

Update 23/01/2017 – This is a real issue and not a once off. VMware Engineering are aware.

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Caution: VCHA + Snapshots

I’ve been playing around with VCHA and had been taking snapshots and have encountered some issues using snapshots on a VCHA enabled VCSA 6.5

You need to exercise caution when using snapshots on a VCSA that is enabled for VCHA.

Important: This is only when snapshot tasks are being done to the VCSA 6.5 VM. For all other VMs in your inventory there is no issue.

This includes taking snapshots of the current Active, reverting to snapshots of the current Active and deleting snapshots of the current Active.

For any and all of those tasks, ensure that the VCHA Cluster is in “Disabled” mode.

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vCenter HA Failover Scenarios

This post should hopefully help you understand what is and what is not protected by VCHA and also what to expect depending on the situation.

For more on VCHA please see my previous posts:

vCenter HA Gotcha’s

vSphere 6.5 Feature Preview: vCenter High Availability

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vCenter HA Gotcha’s (vSphere 6.5)

There are a few gotcha’s and known issues that I have found with vCenter HA. Hopefully the following will be of use and avoid the need to engage VMware Support to resolve.

For more on VCHA please see my previous post which also includes short videos of both deployment methods.

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vSphere 6.5 Feature Preview: vCenter High Availability

vcha_1

One of the most anticipated features of vSphere 6.5 is native high availability for vCenter Server. No additional product like vCenter Server Heartbeat or no third party feature like MSCS/WFCS is needed.

The first thing to point out is that this feature is exclusive for the vCenter Server Appliance 6.5.

Windows vCenter Server 6.5 will still support MSCS/WFCS to provide high availability.

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vSphere 6.5 Feature Preview: vCenter Server Appliance

The vCenter Server Appliance has come a long way from it’s first iteration way back with vSphere 5.0. A moment of silence for the VCSA 5.0 with embedded DB2 database.

With the vSphere 6.5 release, the vCenter Server Appliance not only gains 100% parity with it’s Windows counterpart, but actually now exceeds it with some exclusive features.

You can interpret the fact that the VCSA is now getting exclusive features however you want to.

Please don’t ask me “Is the Windows vCenter going away?” – because I honestly don’t know the answer.

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