As an infrastructure administrator, my journey to becoming a cloud architect has been filled with exciting new features and improvements in the latest versions of vSphere. Recently, I upgraded from vSphere 6.7U3 to vSphere 7.0U1 and was delighted to discover several small but significant changes that enhance the performance and reliability of our vSAN environment.
One of the most notable changes is the introduction of a new RAID type, RAID_D, which guarantees that all new write operations have two copies of data for improved data integrity. This feature ensures that even in the event of a failure, data will still be accessible and intact. When we put a host in Maintenance Mode with Ensure Accessibility option enabled, we can see this new RAID type in action. For example, if we have three nodes in our vSAN cluster (esxi-59, esxi-74, and esxi-79), all new writes will be directed to both esxi-74 and esxi-79, providing an additional layer of redundancy and data protection.
Another welcome change is the option to enable Compression only on vSAN all-flash datastore. This feature allows us to compress our data without sacrificing performance or deduplicating it. The bonus is that in case of a failure of a capacity disk, the whole disk group will not be unmounted, minimizing downtime and ensuring business continuity.
In addition, we can now mount vSAN datastore from a remote cluster and use it as spare capacity for VMs. This feature enables us to leverage resources from multiple clusters, providing greater flexibility and scalability in our vSAN environment.
Moreover, the famous VMware fling IOInsight is now integrated with vCenter UI performance tab. We can run an instance of IOInsight on selected target hosts and monitor I/O performance of VMs in detail. This feature allows us to compare I/O performance between up to 10 VMs on a shared chart or use separated charts for more detailed analysis, enabling us to identify bottlenecks and optimize our infrastructure.
Overall, these changes in vSphere 7.0U1 have improved the performance, reliability, and manageability of our vSAN environment. As a cloud architect, I am excited about the potential for further innovation and advancement in future versions of vSphere, and I look forward to exploring more features and capabilities that will help us deliver better services and experiences to our customers.