What is a stretched cluster A vSAN stretched cluster is a deployment model where a single vSAN cluster is extended across two geographically separated data centers, with a third site hosting the Witness Appliance. This architecture provides site‑level resilience by synchronously mirroring data between two active…
Storage Policy–Based Management (SPBM) is the backbone of how VMware vSAN delivers predictable, workload‑aligned outcomes. Instead of carving LUNs or managing fixed RAID groups the old-fashioned way, policies define the storage behavior of each VM and each VMDK—granular, dynamic, and…
VMware vSAN is a powerful and versatile software-defined storage solution that integrates seamlessly with VMware’s hypervisor, vSphere. With the introduction of the Express Storage Architecture (ESA), VMware has pushed the boundaries of performance and scalability by leveraging modern hardware. However,…
Last blogpost was on vSAN ESA, so it makes good sense to now look at OSA. OSA stands for Original Storage Architecture. This design provides a two-tier architecture with caching and capacity tiers. It is the original architecture, and it…
In VMware vSAN 8, we are introduced to the option of two different storage architectures. OSA – Original Storage Architecture ESA – Express Storage Architecture What is ESA vSAN Express Storage Architecture (ESA) uses a file system called Log-Structured File…
