Hot-Pluggable SSD PCI Express Device: Users are able to hot-add or hot-remove an SSD device while a vSphere host is running, and the underlying storage stack detects the operation.
Support for Reliable Memory Technology: To provide reliability and great uptime for ESXi Hypervisor, vSphere 5.5 supports a new feature called Reliable Memory, ESXi Hypervisor runs directly in memory, an error in it can potentially crash it and the VMs running on the host.
Support for Reliable Memory Technology: To provide reliability and great uptime for ESXi Hypervisor, vSphere 5.5 supports a new feature called Reliable Memory, ESXi Hypervisor runs directly in memory, an error in it can potentially crash it and the VMs running on the host.
A CPU hardware feature through which a region of memory is reported from the hardware to vSphere ESXi Hypervisor as being more “reliable”. This information is then used to optimize the placement of the VMkernel and other critical components such as the initial thread (initd), hostd and watchdog process and helps guard against memory errors.
Enhancements for CPU C-States: vSphere 5.1 and earlier, uses the power management policy called balanced, the balanced policy used only the performance state (P-state), which kept the processor running at a lower frequency and voltage.
In vSphere 5.5, the Balance policy also uses deep processor power state (C-state), providing additional power savings. Another potential benefit of reduced power consumption is with inherent increased performance, with all C-states enabled, turn Turbo mode on to get the maximum power and performance benefit. vSphere 5.5 uses the USB auto-suspend mode to automatically put idle USB hubs in a lower power state.
*Thanking VMware for information and Image
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