Upgrading from VMware ESXi 6.0 to 8.0 is a multi-step process, as ESXi 6.0 is not directly upgradable to ESXi 8.0. You must first upgrade to ESXi 6.7 or 7.0, and then proceed to 8.0. Step 1: Pre-Upgrade Checks ✅ Verify Hardware Compatibility ✅ Check Existing vCenter Version ✅ Backup…
Category: Vsphere
Differences between vMotion, DRS, Fault Tolerance (FT), and High Availability (HA)
Feature Purpose How It Works Use Case vMotion Live migration of VMs Moves running VMs between ESXi hosts with zero downtime Maintenance without disruption, load balancing DRS (Distributed Resource Scheduler) Automated load balancing Uses vMotion to migrate VMs across hosts based on CPU/memory load Optimizing performance and resource allocation Fault…
🔥 Deep-Dive Tuning Guide: vSAN, NVMe, and Fibre Channel (FC) in ESXi
🔹 1. vSAN Performance Tuning Scenario 1: vSAN Resync Impact & Congestion Issues 🔹 Symptoms: 🔹 Tuning Steps:1️⃣ Check vSAN Cluster Congestion Levels bashesxcli vsan debug object list 2️⃣ Enable Adaptive Resync (If Not Already Enabled) bashesxcfg-advcfg -s 1 /VSAN/ResyncTrafficThrottling 3️⃣ Manually Throttle Resync Traffic (If Needed) bashesxcfg-advcfg -s <value>…
🔥 Advanced ESXi Storage Troubleshooting Guide (vSAN, NVMe, iSCSI, FC, RDMA, Congestion Issues) 🔥In-depth troubleshooting guides covering vendor-specific configurations, vSAN, NVMe, RDMA, NSX-T, and high-performance tuning
🔹 1. vSAN Troubleshooting (High Latency, Disk Failures, APD, PDL) Scenario 1: vSAN Cluster Latency & Slow Performance 🔹 Symptoms: 🔹 Troubleshooting Steps:1️⃣ Check vSAN Cluster Health bashesxcli vsan health cluster get 2️⃣ Check if vSAN Disks Are Congested bashesxcli vsan debug disk list 3️⃣ Analyze vSAN Disk Latency in…
Real-time scenario-based questions and answers on VMware ESXi: Part-5
🔥 Advanced ESXi Troubleshooting Based on Specific Technologies 🔹 Hardware-Specific Issues (HPE, Dell, Cisco UCS) 24. ESXi Host Fails to Boot After Firmware Update (HPE/Dell/Cisco UCS) Scenario: Solution Steps: 25. ESXi Host Reports “No Compatible NIC Found” on HPE/Dell Servers Scenario: Solution Steps: 🔹 Storage-Specific Issues (vSAN, iSCSI, FC, NFS)…
Real-time scenario-based questions and answers on VMware ESXi: Part-4
Advanced Storage Issues in ESXi 18. Datastore Becomes Read-Only Scenario: Possible Causes: Solution Steps: 19. ESXi Host Loses Access to iSCSI Storage (APD/PDL Errors) Scenario: Solution Steps: 20. High Storage Latency Causing VM Performance Issues Scenario: Solution Steps: Advanced Network Issues in ESXi 21. VM Network Latency or Packet Loss…
Real-time scenario-based questions and answers on VMware ESXi: Part-3
11. vMotion Fails – VM Stuck at 14% or 90% Scenario: When trying to migrate a VM using vMotion, the operation gets stuck at 14% or 90% and fails. Possible Causes: Solution Steps: 12. ESXi Host Fails to Enter Maintenance Mode Scenario: When trying to put an ESXi host into…