scripting: keeping 5 restore sessions to restore 5 folders at a time, and start additions if some session are completed until all folders are restored

Question

There are about hundreds of first level of folders under a drive, with large amount of data in total. I can have a file containing all hundreds of first level folders that need to be restored.

We can run maximum of 5 restore commands at any single time, and each one is to restore a single folder, for instance, "restore -options c:\folder1*", ... "restore -options c:\folder5*". Also, when any of these 5 commands are finished, we need to grab same number of finished folders from the file containing all folders, and start more such restore commands. So, the script should be also able to constantly check how many sessions/commands are running. In unix, I can do "ps -ef | grep restore | wc -l" to check if there are 5 restore commands running.

Can you please help me to script this function? Thank you!
I am from Unix background, and just starting to learn PowerShell.

Answer 1

Hi,

Thank you for posting your query.

Kindly check the details below to resolve your issue.

I found an article that restores files and folders that DFS Replication previously preserved.

Go to this link for your reference https://learn.microsoft.com/en-us/powershell/module/dfsr/restore-dfsrpreservedfiles

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Answer 2

Something like this may be what you need:

$maxConcurrentJobs = 5  
foreach($Object in $Objects) {  
    if ((Get-Job -State 'Running').Count -lt $maxConcurrentJobs) {  
        $ScriptBlock = {  
            #Insert the code of your workload here  
        }  
    }  
    else{  
        while ( (Get-Job -State 'Running').Count -lt $maxConcurrentJobs){  
            Start-Sleep -Seconds 5  # pick a suitable time to wait based on typical job duration  
        }  
        # when a running job ends, for whatever reason, start another  
        Start-Job -ScriptBlock $ScriptBlock = {  
            #Insert the code of your workload here  
        }  
    }  
}