02-12-2010 11:38 AM
Hello, TS100 is server which almost impossible to buy as new as Lenovo already transitioned to TS200.
Anyway - to aswer your question - I have couple of friends running ESX 3.5 (not 4.0 yet) without problems on TS100. The datasheets from Lenovo do not contact info jus because it cost a lot of money to get certification and for such lowend product the decision was not to do it. But you should not have a problem to run it.