Bind Devices: Access to AOMEI Cyber Backup web client, navigate to Source Device > VMware ESXi > + Add VMware ESXi to add a ESXi host/cluster. 3 quick steps to back up all ESXi VMs on a clusterġ. *You can choose to install this VM backup software on either Windows or Linux system. You can click the following button to download the freeware: Next, I will demonstrate how to create a backup task in 3 steps. ✦ Perpetual Free: you can use AOMEI Cyber Backup Free Edition with no time limit.ĪOMEI Cyber Backup supports VMware ESXi 6.0 and later versions. ✦ Automated Execution: create backup schedules to automate virtual machine protection. ✦ Multiple Storage Destinations: backup to local or network share destinations. ✦ Agentless Backup: create complete and independent image-level backup for VMware ESXi VMs. Here I introduce you to a free VMware backup software - AOMEI Cyber Backup. To quickly back up all VMs on a cluster before enabling VMware data deduplication, some dedicated backup tool may be able to help you better. With the native VMware backup solutions, you can only back up one VM on the cluster at a time. However, if you want to enable this vSAN deduplication feature with live data, please be sure to back up your VMs in advance, in case of data loss. Therefore, it is best to set it up during the beginning, since it takes time to migrate, format and move back the data. Important: Backup VMs before enabling data deduplicationīefore you start, you have to know that enabling VMware data deduplication requires a rolling reformat of all disks in the vSAN cluster. However, redundant blocks across multiple disk groups are not deduplicated. Enabling deduplication and compression on vSAN cluster, the algorithm utilizes a fixed 4K block size to detect and remove redundant copies of data blocks within each disk group. And it is only available on all-flash disk groups, on-disk format version 3.0 or later. VMware vSAN deduplication occurs when cold data is sent to the capacity tier (after the write acknowledgments are sent to the VM). When the data is no longer active, the cold data will be destaged to the capacity tier at a time and frequency determined by the vSAN. To provide a higher level of storage performance, active VM data is first written to the write buffer with write acknowledgements sent immediately to the guest. VSAN is a two-tier distributed storage system made of a cache tier and a capacity tier. This means that you must have a valid license to enable vSAN deduplication and compression on your cluster. VMware data deduplication is not a function of ESXi itself, but provided by vSAN, a software-defined component that is fully integrated with vSphere. In this article I will introduce how VMware data deduplication works, and the detailed steps on how to enable deduplication and compression on vSAN. Both of them can effectively reduce the amount of physical storage required to store the data. Deduplication removes redundant data blocks, while compression removes additional redundant data from each block. In VMware environments, it is often used in combination with data compression. When backing up VMware ESXi VMs, if you have limited storage space or just want to save on VM storage costs, you definitely need to know about VMware data deduplication technique.ĭata deduplication is a simple and practical space efficiency feature.
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