Reduce OSD Time
1. Set High Performance Power Plan
- This has proven in multiple environments that I have been to save 20% - 50% on certain steps, such as download/apply the OS. Also note that by default configmgr while in WinPE will run power setting set to balanced, so making sure we use all resources we can see a major win from this piece. I also set this to prvent systems from going to sleep during the TS.
2. Set SMS Host Agent start-up options
- By default the SMS Host Agent (CcmExec) service is set to a delayed start. So every time you restart the system during the OSD Process and you see the "initializing System Center Configuration client" you are just costing time. In my environment this message would usually last 2 - 5 minutes each restart. Once I implemented this we noticed the configmgr client would only take < 15 seconds to initialize, that is a savings of 800% - 2000% for this specific task sequence action.
- Frank Rojas whom is one Microsofts CSS Lead OSD Engineer has let me know that this has POTENTIAL for failures in a TS. So please know that if you use this step please understand it is not supported by Microsoft. I have not personally seen any problems with this, but I do understand there is possible for OSD failure as a result.
3. Set SMSTSRebootDelay
- This will change the default behavior from 30 seconds to 0 seconds and occur immediately
4. Set manual Restart times (for displayed messages)
- By default when you add a restart computer step into the TS the time is set to 60 seconds. Simply by un-checking the "Notify the User before restarting" box you now force the restart immediately. Should you need to actually display a message you can just reduce the amount of time this box is displayed.
5. Eliminate unnecessary restarts / steps
- I have seen several customer environments that had 8 or more restart steps in their TS. Whenever you have a restart in a TS you can assume usually 2 - 5 minutes are added to the total TS time. I would recommend investigating the status messages for exit codes indicating a restart is necessary before you start modifying a customers task sequence. Many of my peers usually have only 2 or 3 restarts in their TS as they have streamlined their deployments.
- MVP Mick Pletcher has a great post on how to handle restarts in your TS. Basically add a condition statement to check if the system needs a restart you can read about it and implement it here
6. Patch the WIM
- This will of course help you out on the install software update steps in your TS. The more patches that are in your WIM, the less to process later. I tend to bake office and patches into the WIM. I'm not a fan of having really thick images loaded with several 3rd party apps that can be installed during ts.
7. Verify boundaries are efficient
- This should be another no-brainier idea, but you will be surprised. I've seen customer environments where a machine from the east cost USA would pull down images from the middle east....like there is literally an entire ocean btwn the DP and the workstation..
8. Prevent OOBE From connecting to Windows Update
- I've seen in the SMSTS.LOG before that a system I was imaging was trying to reach out to windows update. Some places you are confined to image from certain vlans only and you can block this communication at the firewall. In my TS I modify the Registry to prevent this action from occurring. Unfortunately this was something changed in my TS a long time ago so I did not grab a screenshot. I can edit this post when I get around to making the next revision of changes in the updated WIM. (Thanks Todd)
BEFORE MODIFICATIONS
On my test experiment the OSD process would take around 100 - 110 minutes...that's nearly two hours, and wayyyy too long.
I like to use Thomas Larsens OSD Dashboard when I keep track of some Task sequence information like this. Please check out his blog
here. I believe this dashboard is a must have for every SCCM admin.
AFTER MODIFICATIONS
Screenshot after changes OSD Times. We see below that this has been reduced to 36 minutes. I am positive I can actually get this to 32 minutes or less, but for now I will leave good enough alone. This test shows that we have cut the OSD time to less than 1/3 of the time. I've been in other environments where they had the image process take 24+ hours, but that is mainly boundary related issues.
TS MODIFICATIONS
Power settings: I kind of have this littered everywhere in my TS before major time consuming steps like apply OS, install patches, install apps, etc.
Name: Set High Performance Power Scheme
Command Line: PowerCfg.exe /s 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c
SMS Host Agent Start-Up Properties: This only needs to go in 1 place right after you install the SCCM Client.
Name: Set SMS Host agent to start immediately
Command Line: cmd /c sc config "CcmExec" start= auto
Dynamic Variables: I have all my variables set here. These are for resiliency, and speed.
Prevent OOBE from Downloading Drivers:
Name: Mount the Offline HKLM File
Command Line: reg load HKLM\Offline C:\Windows\System32\Config\Software
Name: Set DODownloadMode
Command Line: REG ADD HKLM\Offline\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization /v DODownloadMode /t REG_DWORD /d 100
Name: Set DoNotConnectToWindowsUpdate
Command Line: REG ADD HKLM\Offline\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate /v DoNotConnectToWindowsUpdateInternetLocations /t REG_DWORD /d 1
Name: Unmount the Offline HKLM File
Command Line: reg unload HKLM\Offline
End of TS to change back to default (if wanted)
Name: Set SMS Host agent to start delayed
Command Line: cmd /c sc config "CcmExec" start= delayed-auto
Name: Set Balanced Power Scheme
Command Line: PowerCfg.exe /s 381b4222-f694-41f0-9685-ff5bb260df2e
NOTE:
This customer has unnecessary restarts in their OSD design, and were not very streamlined. Things in this version of the TS can be easily baked into the WIM on the next image refresh with the build/capture TS i provided for the customer. There are things that are slow during this TS like install Visual J+, or .Net Framework 3.5 that would reduce the OSD time if baked into image.
Other things to reduce OSD Time:
I still have unnecessary install software update/restart steps in the TS as a sort of catch all. These systems come out fully patched, but are left enable in case I do not get time to capture and test a new wim one month.
Prevent
I have seen in the SMSTS.LOG where systems would try to reach out to windows updates for patches instead of staying within my environment. This can be changed via registry modification...I have this in place in my environment but did not capture screenshots when I saw it in the log files.
All posts are provided "AS IS" with no warranties, and confers no rights.
Labels: Current Branch, OSD, PXE, SCCM
