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A virtual machine file lock issue rarely shows up at a convenient time. It usually appears when a VM refuses to power on, a consolidation task is stuck, a backup window has overrun, or vCenter and an ESXi host disagree about the VM’s state. That is exactly when bad habits get expensive. The temptation is […]
Finding VM File Locks on ESXi: A Production-Safe Runbook Before You Kill Processes Read More »
There are times when the normal ESXi patching path is exactly what you should use: SDDC Manager, vSphere Lifecycle Manager, a tested cluster image, prechecks, staged remediation, and a maintenance workflow that keeps inventory and compliance aligned. Then there are the other days. A host might be standalone. A lab host might not be attached
Command-Line ESXi Patching: A Controlled Workflow for Hosts Outside the Happy Path Read More »
A purple screen on an ESXi host creates an immediate operational problem, but the bigger risk is what happens next. The first reaction is usually to get the host back online. That is understandable, especially when workloads are down, HA is recovering virtual machines, or a cluster is running hot after losing capacity. But if
ESXi PSOD Triage: Turning a Purple Screen into an Evidence-Driven Escalation Read More »
A full /storage/log partition on a vCenter Server Appliance is not just a housekeeping problem. It is a management-plane risk. In a standalone vSphere environment, it can interrupt administration, log collection, patching, and service stability. In VMware Cloud Foundation, the blast radius is larger because vCenter is tied into SDDC Manager workflows, workload domain lifecycle
The vCenter Log Partition Runbook: Find Growth, Preserve Evidence, Restore Headroom Read More »
Certificate changes in vSphere environments rarely fail in only one place. The obvious place to look is the browser warning, the expired certificate alarm, or the service that recently had its Machine SSL certificate replaced. But in production VMware Cloud Foundation and vSphere environments, certificate changes can also break something less visible: the extension and
EAM Certificate Trust Failures: Why vSphere Extensions Break After Certificate Changes Read More »
vVol migrations are easy to misread. When a VM migration fails, the first instinct is usually to look at host load, vMotion networking, datastore latency, DRS behavior, or the backend array. Those checks still matter, but vVols introduce another dependency that can become the bottleneck before the data path is the real problem: the VASA
vVol Migration Failures and VASA Provider Pressure: How to Diagnose the Control Plane Read More »
Raw Device Mappings tend to show up in the places where infrastructure history is still attached to the workload. A database server was moved from physical hardware years ago. A file server needed a very large LUN before VMDK limits improved. A clustered application depended on shared storage. A storage team wanted array-level tooling to
Converting RDMs to VMDKs: A Practical Migration Pattern for Legacy Workloads Read More »
Disable vCLS on a Cluster via Retreat Mode KB 316514 vSphere Cluster Services usually stay in the background until they get in the way of something operational. Most teams first notice vCLS when a cluster task is blocked, a warning appears after maintenance, or a handful of small system VMs show up and someone asks
vCLS Retreat Mode: When to Use It, What It Breaks, and How to Exit Cleanly Read More »
There are storage incidents where the host looks half-recovered. The fabric switch is back online. The link light is good. The array port is healthy. Some paths may even show up again. But inside ESXi, the storage view still does not match reality. A datastore has fewer paths than expected. An RDM-backed workload is not
When Fibre Channel Paths Lie: A Safe Fabric Login Reset Runbook for ESXi Read More »
There are storage incidents where the host looks half-recovered. The fabric switch is back online. The link light is good. The array port is healthy. Some paths may even show up again. But inside ESXi, the storage view still does not match reality. A datastore has fewer paths than expected. An RDM-backed workload is not
When Fibre Channel Paths Lie: A Safe Fabric Login Reset Runbook for ESXi Read More »
