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Installing and Using PowerShell DSC on Linux

In the last two weeks I’ve been playing with PowerShell DSC for Linux and truth to be told I’m impressed on how stable it is since the last time I tried it. I started trying DSC for Linux first it came out and to be honest while it was nice, the bugs didn’t help that much and I always came up with something that made me revert back to a previous checkpoint be it compiling the OMI and DSC, pushing a configuration or breaking the OMI server after fiddling around the configuration files but hey that’s what you get when you’re trying out bleeding edge stuff right?
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Quick Tip: Removing SCCM 2012 R2 Expired Client Operations

I’ve been doing some work on a System Center Configuration Manager 2012 R2 installation and after a while the Client Operations log was filled with a lot of expired operations that clogged up the view. Needless to say, the GUI doesn’t help us very much with this matter because you cannot select all the entries and delete them instead you have to manually delete them one by one which complicates things when you have 300 or more operations.

With PowerShell you can do that in a very painless manner.
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PowerShell Scripts to add / remove data disks on Azure VMs

First things first. Happy New Year!

So after I finished a long waking up cycle I remembered working on a project that involved migrating some SQL workloads to Azure and those workloads required a high amount of IOPS in order to perform optimally. Now after testing the storage system of the on-premise servers I found that they were capable of delivering about 2000 IOPS which is not much and that was with 15K RPM spindles configured in a RAID 5. Now achieving 2000 IOPS in Azure is very easy from a hardware perspective. On a Standard type of VM, one data disk can offer 500 IOPS so you would need four data disks and then configure a software RAID to stripe the data across all disks. This can be done on Windows using Storage Spaces or MDADM if the operating system is Linux.
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