ESXi Hardware Requirements
Make sure the host meets the minimum hardware configurations supported by ESXi 5.5.
Hardware and System Resources
To install and use ESXi 5.5, your hardware and system res
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■ ESXi 5.5 will install and run only on servers with 64-bit x86 CPUs.
■ ESXi 5.5 requires a host machine with at least two cores.
■ ESXi 5.5 supports only LAHF and SAHF CPU instructions.
■ ESXi 5.5 requires the NX/XD bit to be enabled for the CPU in the BIOS.
■ ESXi supports a broad range of x64 multicore processors. For a complete list of supported processors, see the VMware compatibility guide at http://www.vmware.com/resources/compatibility.
■ ESXi requires a minimum of 4GB of physical RAM. Provide at least 8GB of RAM to take full advantage of ESXi features and run virtual machines in typical production environments.
■ To support 64-bit virtual machines, support for hardware virtualization (Intel VT-x or AMD RVI) must be enabled on x64 CPUs.
■ One or more Gigabit or 10Gb Ethernet controllers. For a list of supported network adapter models, see the VMware Compatibility Guide at http://www.vmware.com/resources/compatibility.
■ Any combination of one or more of the following controllers:
■ Basic SCSI controllers. Adaptec Ultra-160 or Ultra-320, LSI Logic Fusion-MPT, or most NCR/Symbios SCSI.
■ RAID controllers. Dell PERC (Adaptec RAID or LSI MegaRAID), HP Smart Array RAID, or IBM (Adaptec) ServeRAID controllers.
■ SCSI disk or a local, non-network, RAID LUN with unpartitioned space for the virtual machines.
■ For Serial ATA (SATA), a disk connected through supported SAS controllers or supported on-board SATA controllers. SATA disks will be considered remote, not local. These disks will not be used as a scratch partition by default because they are seen as remote.
Note
You cannot connect a SATA CD-ROM device to a virtual machine on an ESXi 5.5 host. To use the SATA CD-ROM device, you must use IDE emulation mode.