Recommended BIOS Settings on HP
| HP Power Profile | Custom | Allows to enable custom Power settings specific for vSphere |
| HP Power Regulator | OS Control Mode | Hands over the Power Management to vSphere. The other options give this control to the server itself. |
| Redundant Power Supply Mode | High Efficiency Mode (Auto) | By default (Balanced Mode), the server uses all installed PSUâs. This might look like the most efficient use, but the more power is drawn from a PSU, the more efficient it operates. The less power you draw from a PSU, the more gets lost to keep the PSU working. Thus, it is best to use the minimum amount of PSUâs so they deliver the highest possible output. The remaining PSUâs are placed in standby. This settings does not affect redundancy as the standby PSUâs jump in as soon as an active one fails. By using the âAutoâ mode, the active PSUâs are chosen based on the serverâs serial number (odd or even number = odd or even PSU numbers). This makes sure that all power circuits in the racks are evenly used. |
| Minimum Processor Idle Power State | C3 State | Needed for vSphere Dynamic Voltage and Frequency Scaling (DVFS). Allows vSphere to halt unneeded cores. |
| DIMM Idle Power Saving Mode | Enabled | DIMMs can put themselves into Low Power mode when not used. This will save some power if not all memory is used on the host. |
| ASR Status | Disabled | ASR monitors an agent running in the Service Console. When this does not respond within 10 minutes, the host is rebooted. However, if the agent fails or the Service Console becomes sluggish (even though the VMâs are perfectly fine), ASR will detect this as a system hang and will reboot the server. Furthermore, in case of a PSOD, ASR will reboot the server as well. This reboot might cause a loss of some logfiles. |
| Automatic Power-On | Disabled | If set to enabled, the server will power-on as soon as AC Power is available. When set to disabled, power is restored to its previous state when AC Power is available. |
| Virtual Install Disk | Disabled | This Virtual Install Disk only contains drivers for Microsoft Windows Operating system. |