Active Memory Expansion (AME) can second in my Top Ten Technologies to be business as usual in the next few years from hundreds of votes world wide. It is available on Power7 machines with AIX 6.1 TL4 SP2 onwards and AIX 7, of course. This allows memory to look at lot bigger than it actually is - to allow more LPARs to be running on a machine or giving headroom for boosts performance. The usefulness of AME is all down to the Expansions Factor (EF) - which is based on the compression ratio achieved for memory pages. If the EF very low then you... [More]

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