A week ago while ‘defending’ a design for a ‘customer’ we were talking about the best option to place ESXi4.1.
Basically there are three options that popped up into my mind, either you install your hypervisor on:
- Local disk, most of the time in a RAID1 configuration
- SAN boot disk
- USB key or SD card
Since you do not design an environment with solutions that are not supported by VMware, you try to avoid them.
In this case we eventually talked about the USB key option and as I wanted to stick with VMware guidelines I declined the option in favor of one of the two other options, local disk or SAN boot disk.
But actually the third option is not incompatible with VMware guidelines and I found a VMware KB clearly saying that VMware support USB keys and SD cards with two conditions:
- The server on which you want to install ESXi 4.x is on the ESXi 4.x Hardware Compatibility Guide.
- You have purchased a server with ESXi 4.x Embedded on the server from a certified vendor.
- You have used a USB or SD flash device that is approved by the server vendor for the particular server model on which you want to install ESXi 4.x on a USB or SD flash storage device.
Back to my design, now this option is a good alternative and actually could potentially save my ‘customer’ some money and this is always a good thing 🙂