214 IBM eX5 Implementation Guide5.15 Integrated virtualizationThe HX5 offers an IBM 2 GB USB flash drive option that is preloaded with either VMwareESXi 4.0 Update 1 or VMware ESXi 4.1: ESXi 4.0 is for 1-node HX5 configurations only. ESXi 4.1 is required for configurations with the MAX5 memory expansion blade or for2-node HX5 configurations.The virtualization-optimized models include ESXi 4.1, as listed in Table 5-6 on page 184.ESXi is an embedded version of VMware ESX and the hypervisor is fully contained on theflash drive. Table 5-29 lists the ordering information for the IBM USB Memory Key for VMwareHypervisor.Table 5-29 USB Hypervisor optionAs shown in Figure 5-27, the flash drive plugs into the Hypervisor Interposer, which, in turn,attaches to the system board near the processors. The Hypervisor Interposer is included asstandard with the HX5.Figure 5-27 Placement of VMware USB key in HX5See 5.17, “Operating system support” on page 215 for details about VMware ESX and otheroperating system support.5.16 Partitioning capabilitiesWhen you have a 4-socket HX5 that consists of two HX5 blade servers, you use scalablecomplex within the Advanced Management Module to create, delete, and switch betweenstand-alone mode and scaled mode, as shown in Figure 5-28 on page 215.Part number Feature code Description41Y8278 1776 IBM USB Memory Key for VMware Hypervisor ESXi 4.0 Update 141Y8287 3033 IBM USB Memory Key for VMware ESXi 4.1 (required for MAX5)VMware hypervisorUSB keyHypervisor Interposer
