What is VMware HA?
Here you will find out:
- what is VMware HA
- VMware HA technical info
- how to restore VMDK files from VMware VM
Are you ready? Let's read!
VMware HA: what is it?
Several types of clusters can be built on the VMware vSphere virtualization platform, and a High-Availability Cluster (HA) is one of them. VMware’s high availability is based on combining several physical servers on a cluster on which VMs are running. As soon as, under certain circumstances, one of the hosts breaks down and stops working, the virtual machines start on other servers directly from the created group (i.e., the space for such purposes was previously reserved on these servers).
Thus, we can say that vSphere’s high availability is constantly monitored by all ESX/ESXi Server hosts in the cluster in case of any failures.
A bit of VMware HA technical info
Features on VMware HA can significantly increase the resiliency of virtual infrastructure and make continuous the daily work of medium-sized corporations.
It should be noted that the maximum number of hosts in a cluster is now 32.
This value is not so small, but sometimes it is not enough for large companies.
Due to the fact that fault tolerance, due to VMware’s high availability, is high, this in turn provides the prerequisites for security and reliability.
Also, this type of cluster takes into account the rules of anti-similarity of VM-VM; this eliminates the need to migrate vMotion after failover.
Another important feature is interaction with IPv6 networks.
VMware HA itself is easy to configure and has a simple and affordable interface.
How to restore VMDK files from VMware VM
This situation can happen at any moment and may take you by surprise.
Therefore, always have DiskInternals VMFS Recovery on your computer. This utility reads VMware VMFS file systems instantly and retrieves any data in VMFS format. Disks in this case can be not only serviceable, but also damaged for any reason. The entire recovery process takes place online without turning off the system. As a bonus, you can use the VMDK file recovery function stored on disks formatted using VMware ESXi Server. Using the Recovery Wizard, you won’t have to worry about the effectiveness of the process.
A completely free preview function will convince you you made the right choice for your vmdk file recovery application. With this software, virtual disks can be mounted as local disks, in which case they can be viewed in Windows Explorer or similar programs. Unicode and multi-level folders are also supported here.
Instructions for using this application:
Download and install DiskInternals VMFS Recovery to begin recovery.
Connect via SSH, if necessary.
Then open the disk (it can be a local disk or SSH).
After scanning, find the necessary vmdk files.
The next step is to mount the vmdk file. Just open this vmdk file by double-clicking the left mouse button.
Next, review the files to verify their integrity.
The final step is to acquire a license to export data. Recovered data is exported to local or remote locations, including FTP.
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