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VMware Paravirtual SCSI (PVSCSI): Reduce CPU Load and Increase Disk Throughput for Virtual Machines

By admin June 13, 2026

PVSCSI (Paravirtual SCSI) is VMware's optimized virtual adapter that significantly reduces CPU overhead and boosts IOPS compared to the default emulated LSI Logic adapter. This guide covers how to change the SCSI adapter via the GUI, PowerCLI, and .vmx file, with real fio benchmarks on vSphere 8.0.

VMware

VMware VM Performance Optimization: A Real-World Checklist from Production

By admin March 6, 2026

Six months managing an 8-host ESXi VMware cluster: choosing the right disk adapter (PVSCSI), network adapter (VMXNET3), controlling the balloon driver, handling long snapshot chains, and monitoring with esxtop. A practical checklist that brought CPU ready time down from 8% to under 2%.