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Recently, I had the need to run a logical disk free space report and knowing that this isn’t provided out of the box I created a report and put it into a new management pack. I was then approached about collecting fragmentation data on each drive as well and this got me thinking, why don’t I create an MP that extends the standard management of logical disks. So, I created it !
This management pack collects 21 different statistics on each managed logical drive. These counters are…
- Average File Size
- Average Fragments per File
- Cluster Size
- Excess Folder Fragments
- File Percent Fragmentation
- Fragmented Folders
- Free Space
- Free Space Percent
- Free Space Percent Fragmentation
- MFT Percent in Use
- MFT Record Count
- Total Excess Fragments
- Total Files
- Total Folders
- Total Fragmented Files
- Total MFT Fragments
- Total MFT Size
- Total Page File Fragments
- Total Percent Fragmentation
- Used Space
- Volume Size
Collecting this many counters created its own challenge as I didn’t want to have to run a script multiple times to collect each counter or run it for each drive. To combat this challenge I wrote a data source that all the collection rules use. This data source contains a VBS script that will only run once per server at the scheduled time and collect all 21 pieces of data for each and every logical drive on that server. Writing a data source and rules like this means that cookdown does not get broken and is the most efficient way of collecting and monitoring data.
This management pack also contains a “Free Space” report and a “Top 10 fragmented logical drives” report as well as performance, state and dashboard views for you to consume all the collected data. And, there is also a task to analyze whether a logical drive requires defragmentation or not.
Click the following link if you want to download the MP or review the guide for more information, http://www.systemcentercentral.com/tabid/145/IndexId/64216/Default.aspx. The download will include a sealed copy of the MP, an unsealed copy of the MP and the MP guide.
I hope you find it useful and please let me have and feedback, good or bad, that you may have :-)
David