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we want to create some vm's on older server. Its an HP ProLiant DL160 Gen5 with an Xeon 5405. So by the intel specs ( the cpu included the VT-x technology. But there aren't any settings in the BIOS for VT-x. It may be true that the bios not support vt-x but the cpu?


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Old BIOSes may refer to it as "Vanderpool". Check in Advanced - CPU Configuration. – Michael Hampton Oct 17 '13 at 7:20

You probably need a firmware upgrade.

See the following answer: Flashing the BIOS on a DL380 G5 without Windows

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