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Developer tools · #vsphere
Learn how to implement and tune vSphere DRS to automate VM load balancing, manage affinity rules, and prevent resource contention across ESXi clusters.
Learn how to optimize vSphere DRS to balance cluster workloads without causing vMotion churn. Includes a guide on Anti-Affinity rules for high availability.
vSphere DRS automates CPU and memory balancing across hosts. Learn how to enable it, set thresholds, create affinity rules, and monitor migrations to keep your cluster healthy without thrashing.
A diagnostic guide for resolving 'Host Not Responding' errors in vSphere. Learn how to differentiate between management agent failures and total host crashes to restore connectivity without impacting VMs.
Learn how to use VMware’s Storage I/O Control (SIOC) to keep critical VMs responsive on shared datastores. A step‑by‑step guide, example configuration, trade‑offs, and a practical checklist help you mitigate I/O contention effectively.
Learn how to architect and implement vSphere DRS for automated workload balancing, including networking requirements, trust boundaries, and failure mode analysis.
When migrating a powered-on virtual machine between ESXi hosts in a vSphere environment, the final memory synchronization phase involves a brief period where the VM is paused, known as the stun period. For small applications with strict latency requirements, this pause can potentially trigger application-level timeouts or disconnects. The duration of this st
vSphere Distributed Power Management (DPM) can power down idle ESXi hosts in a DRS-enabled cluster, which may reduce power and footprint for low-traffic workloads. The unresolved decision is whether to run DPM in fully automated mode or manual recommendation mode when workload variability and SLA sensitivity are both present. DPM depends on cluster-level DRS
An external automation client needs to issue mutating vSphere operations such as CreateVM_Task, ReconfigureVM_Task and CreateDisk_Task against vCenter Server API and be able to retry on transient transport failures without creating duplicate VMs, disks or configuration changes. vSphere exposes mutating operations as asynchronous Tasks tied to a Managed Objec