In order to install a 64 bit version of an operating system in ESXi (probably ESX too but I know this for a fact with ESXi) the processors need to have virtualization capabilities built in, Intel refers to it as VT and AMD uses AMD-V IIRC. The x850 stuff from Dell pre-dates virtualization capabilities being embedded in processors, or at least they didn't ship any of it in the x850 series. If you wanted to run virtual 64 bit linux instances on there you should be able to do so with XenServer or one of the other Linux based virtualization solutions. If you're looking to use it as a compute resource I'm not sure that virtualization is the right track for you to b following but there you go. Josh On Tue, Dec 22, 2009 at 9:12 AM, Randy Clarksean <rclarksean at arvig.net> wrote: > Ok .. just purchased a used Dell PowerEdge 6850 on Ebay. 4 CPUs at 3.16 > GHz. I purchased it to make a computational box out of it ... wanting the 8 > cores and lots of memory. > > Now ... I put VMWare ESxi 4.0 on it and was installing a 64 bit version of > Scientific Linux. During the install ... it tells me that I can not install > a 64 bit version ... and that I should install a 32 bit version. > > The CPU details are listed below ... I THOUGHT these were 64 bit CPUs ... > did I mess up? > > 3.16GHZ INTEL XEON-MP 667MHZ SOCKET 604 1MB SL84U > > Thoughts and comments welcome. Thanks in advance. > > Randy > > > > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list >