How-to create bootable ESXi 5 USB stick by using Vmware Player - ESX Virtualization
How to clone your ESXi SD card for backup > ProVirtualzone - Virtual Infrastructures
A Complete Guide to Backing Up and Restoring VMware ESXi Host Configuration
HOW TO: Backup (Export) and Restore (Import) virtual machines to VMware vSphere Hypervisor 5.1 for FREE | Experts Exchange
How-to add an ESXi connected USB device to a VM - vBrain.info
How to Copy ESXi VM to USB Device | Image-Level & File-Level
USB Image Tool for Windows easily backs up and restores your complete VMware ESXi hypervisor on USB or SD flash drives, a simple/free clone for peace of mind before patching or upgrading
How to Copy ESXi VM to USB Device | Image-Level & File-Level