单项选择题 When comparing capacity-to-capacity， the IBM Rear Door Heat eXchanger helps provide more advantages than other available thermal environment solutions， usually at a fraction of the cost.   Which of the following statements is NOT an advantage of the IBM Rear Door Heat eXchanger？ （）

单项选择题 WhatisthenameoftheIBMsolutionthathelpstomonitorpowerconsumptiontoallowbetterutilizationofavailablepowerresources？（）

单项选择题 Virtualization is a technology that can help reduce power and cooling requirements. IT organizations can consolidate multiple OS and application stacks on each server with virtualization software.  What IBM solution simplifies virtualization for IBM hardware？ （）