VMWare vSphere or ESXi

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Hardware or driver related notes

• Identify correct driver for ESXi host hardware component
• Raw device mapping (RDM)
• Enabling Realtek NIC on VMWare ESXi6.5
• Recognize new virtual disks added to Linux VMs without reboot
• Install latest ESXi on older unsupported hardware
• Configure VMFS filesystem on USB disk and mount it as datastore on ESXi host
• Install ESXi patch via depot zip file
• ESXi boot issues

ESXi configuration related notes

• ESXi host configuration backup and restore
• Disable ESXi coredump and delete coredump file
• ESXi persistent scratch location esp. for VSAN nodes
• Disable password complexity in ESXi 6.5
• ESXi host time settings
• Create standard port-group for trunking all VLANs to VM
• Best practices for using snapshots in vsphere environment
• Configure VM with paravirtual adapter for better queue depth
• Renaming VM or template storage folder name
• Downgrade virtual machine hardware version
• Copy sparse or thin VM disks from one ESXi host or one datastore to another
• Configure ESXi host to use multiple network ports for iSCSI multipathing
• Find mapping between VMWare virtual disk and Harddisk inside Windows VM

ESXi host troubleshooting notes

• Unregister invalid VMs using ESXi command-line
• Enable SSH or SCP from one ESXi host to another
• ESXi host fails to enter maintenance mode without any error
• ESXi losses all vmkernel or ip configuration
• Test connectivity when using multiple tcp/ip stacks

Nested ESXi related notes

• Install nested ESXi on top of ESXi in a VM
• Install nested ESXi on top of KVM in a VM
• Create template of nested ESXi for cloning and repeat use
• Create nested ESXi for vSAN experiments with SSD disk

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