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Ok.... &nbsp;It seems that there is overhead to consider and that not all will be allocated and there seems to be a few why this is. &nbsp;The documents says that sometimes not all is allocated so I'll let it be...<br />
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Thanks for the doc. &nbsp;This helps a ton! 
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Ok....  It seems that there is overhead to consider and that not all will be allocated and there seems to be a few why this is.  The documents says that sometimes not all is allocated so I'll let it be...

Thanks for the doc.  This helps a ton!

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I guess the key is to always add more memory than you need to allow room for overhead and other memory allocation variables that can reduce the total amount accessible by your virtual machines.
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I guess the key is to always add more memory than you need to allow room for overhead and other memory allocation variables that can reduce the total amount accessible by your virtual machines.

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I just installed ESXi v4 on a HP DL 380 G4. &nbsp;On my configuration page it shows 8123.6 MB total and 7305.0 available for virtual machines, however, when clicking on the Resource Allocation tab I see a total capacity of 6079 MB. &nbsp;Why is this? &nbsp;Also, my hardware consists of a HP DL 380 G4 with 8 GB's of RAM. &nbsp;My goal is to create 2 x virtual Windows 2003 Standard 32 bit machine with approx 4 GB's of RAM allocated to each. &nbsp;
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I just installed ESXi v4 on a HP DL 380 G4.  On my configuration page it shows 8123.6 MB total and 7305.0 available for virtual machines, however, when clicking on the Resource Allocation tab I see a total capacity of 6079 MB.  Why is this?  Also, my hardware consists of a HP DL 380 G4 with 8 GB's of RAM.  My goal is to create 2 x virtual Windows 2003 Standard 32 bit machine with approx 4 GB's of RAM allocated to each.  

ESXi virtual machine memory allocation question

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.

Microsoft Server OS

VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.