1. Installing Internal Optional DevicesExpress5800/T110f-S User’s Guide 53Chapter 2 Preparations1.8.1 Maximum supported memory sizeThe maximum available memory size on the server depends on the architecture (x86 architecture) and OSspecs.A list of maximum memory sizesOS The maximum memory sizesupported on each OSThe maximum memory sizesupported on the server4 GB (If using HW-DEP function)* Default factory settingsWindows Server 2008 Standard 4 GBAbout 3.5 GB (If not usingHW-DEP function)Note: When Execute Disable Bit(XD Bit) is set to Disabled inBIOS SETUP.Windows Server 2008 R2 Standard (x64) 32 GBWindows Server 2008 Enterprise 64 GBWindows Server 2008 R2 Enterprise 2 TBWindows Server 2012 StandardWindows Server 2012 Datacenter4 TB32 GBRed Hat Enterprise Linux 5Red Hat Enterprise Linux 616 GB 16 GBRed Hat Enterprise Linux 5 (EM64T) 1 TBRed Hat Enterprise Linux 6 (x86_64) 3 TB32 GBVMware ESXi 5.1 2 TB 32 GBUp to 1 TB of the main memory isavailable to each virtual machine.1.8.2 Installation orderInstall DIMMs one by one in order of increasing memory size into slots in the order of DIMM#1, DIMM#2,DIMM#3, and DIMM#4. However, if you want to run the server in 2Way Interleave mode, observe thefollowing when installing the DIMMs:• Install DIMMs in pairs• The two DIMMs installed together must be of the same specifications and memory size.• Install the pairs as DIMM#1 and DIMM#2, or DIMM#3 and DIMM#4 (the installation order between thepairs does not matter.)Installation examplesExample 2Way Interleave DIMM#1 DIMM#2 DIMM#3 DIMM#41 Runs 2 GB DIMM(Standard)2 GB DIMM Not installed Not installed2 Runs 2 GB DIMM(Standard)2 GB DIMM 2 GB DIMM 2 GB DIMM3 Does not run 2 GB DIMM(Standard)2 GB DIMM 2 GB DIMM Not installed4 Does not run 2 GB DIMM(Standard)2 GB DIMM Not installed 2 GB DIMM