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Starting with ESXi 6 VMware has disabled the transparent page sharing (Memory Dedup) by default. Back in 2015 or so there was a theoretical VM escape vector tha
by pickle-wizard 5y ago
Starting with ESXi 6 VMware has disabled the transparent page sharing (Memory Dedup) by default. Back in 2015 or so there was a theoretical VM escape vector that used the shared memory pages. So VMware just changed the default to disabled. I usually recommend turning it back on in lab environments, but leave it off in production for security reasons.