Latest Mac Pro as Server - How to not sleep this thing and it's headless?

[jmille44]

I have the latest Mac Pro using it as a server with no monitor (headless).
This thing goes to sleep and the Energy Saver System Preference has only one
slider for Turn Display off after 1min - Never. I have selected Never and check marked Prevent computer from sleeping automatically when the display is off, but there is no display, so it just goes to sleep.

Anyone have a solution to get the other slider back so this computer does not go to sleep?

Another thread suggested the solution below but the Your-Mac-Model.plist has a lot of files in it and no way of knowing which file is for my Mac. Anyone know which file I should use?

edit "/S/L/E/IOPlatformPluginFamily.kext/Contents/PlugIns/X86PlatformPlugin.kext/Contents/Resources/Your-Mac-Model.plist

find:
<key>UnifiedSleepSliderPref</key>
<true/>

replace:
<key>UnifiedSleepSliderPref</key>
<false/>

rebuild kext cache and reboot.

 

[tuxon86]

I have the latest Mac Pro using it as a server with no monitor (headless).
This thing goes to sleep and the Energy Saver System Preference has only one
slider for Turn Display off after 1min - Never. I have selected Never and check marked Prevent computer from sleeping automatically when the display is off, but there is no display, so it just goes to sleep.

Anyone have a solution to get the other slider back so this computer does not go to sleep?

Another thread suggested the solution below but the Your-Mac-Model.plist has a lot of files in it and no way of knowing which file is for my Mac. Anyone know which file I should use?

edit "/S/L/E/IOPlatformPluginFamily.kext/Contents/PlugIns/X86PlatformPlugin.kext/Contents/Resources/Your-Mac-Model.plist

find:
<key>UnifiedSleepSliderPref</key>
<true/>

replace:
<key>UnifiedSleepSliderPref</key>
<false/>

rebuild kext cache and reboot.

What type of server?

IMO using a workstation instead of a dedicated server has two big negative...

1- The cost - Especially for a simple use like a file and print server. You can get more for less money. The Mac Mini server is a nice exemple.

2- Expendability and redundancy - Dedicated server are made to grow and adapt to the need of the enterprise. A workstation is more of a specialist for a dedicated task. Many server also include redundant component to prevent downtime, like dual PSU and controller.

 

[goMac]

http://semaja2.net/projects/insomniaxinfo/

 

[omvs]

If you're okay with Terminal.app, might try pmset...

pmset sleep 0
pmset displaysleep 0
...

There's a ton of options - maybe "pmset autopoweroff 0" will help too. Much more here than system preferences exposts

 

[jmille44]

Apple helped find the solution for me.

http://support.apple.com/kb/HT200106?viewlocale=en_US

Use the following Terminal command (with an administrator password) to prevent the computer from sleeping:

sudo pmset -a disablesleep 1
When the value is set to 1, all sleep functions are disabled. The Sleep item in the Apple menu is also dimmed ("grayed out").