Download the latest version of ESXi for Dell
Today I needed to download the latest Dell customized ISO of VMWare ESXi. It took me a moment to find the latest version, so here is a link to help you find it faster:
http://www.dell.com/support/drivers/us/en/19/driverdetails?driverid=RD5JN
This is VMware ESXi 5.1 Update 1 and it was released on April 29th 2013.
You can burn it to a CD or mount it via an IPMI/DRAC interface if you so desire. Also, you will need a USB thumbdrive to install ESXi to as you definitely do not want to waste a SAS/SATA drive on ESXi and I believe Dell recommends/requires a USB flash drive for ESXi (they even put a couple nice internal USB ports in just for that purpose!). I used the following thumbdrive with good success:
This version of ESXi is compatible with:
Enterprise Servers 1950 (I installed it on a Dell Poweredge 1950 III)
Enterprise Servers 2900
Enterprise Servers 2950
Enterprise Servers 2970
Enterprise Servers M420
Enterprise Servers M520
Enterprise Servers M610
Enterprise Servers M620
Enterprise Servers M710
Enterprise Servers M710HD
Enterprise Servers M805
Enterprise Servers M820
Enterprise Servers M905
Enterprise Servers M915
Enterprise Servers R320
Enterprise Servers R420
Enterprise Servers R510
Enterprise Servers R520
Enterprise Servers R620
Enterprise Servers R710
Enterprise Servers R715
Enterprise Servers R720
Enterprise Servers R720xd
Enterprise Servers R805
Enterprise Servers R810
Enterprise Servers R815
Enterprise Servers R820
Enterprise Servers R900
Enterprise Servers R905
Enterprise Servers R910