Now that you have upgraded Domino to V10 it's time to get the best performance possible and to do that you need to know what you are dealing with. Find out what DFA (Domino Fragmentation Analyzer) can tell you and once you know that you can take appropriate action to get the most from your investment.
DFA is a Free, easy to use tool created by Preemptive Consulting that runs in a Command Prompt and will quickly analyze Domino and produce a comprehensive report of fragmented nsf files. The DFA concentrates only on analyzing nsf files and will highlight the following:
- Total number of nsf files fragmented.
- How many fragments each of those files are in.
- The most fragmented nsf file.
- Freespace info for the drive hosting the Domino Data directory.
- Number of freespace fragments.
- Size of the largest freespace fragment.
This tool will highlight performance robbing fragmentation as the Operating System hosting Domino sees it. In response to this fragmentation the Operating System generates additional I/O to deal with it regardless of high powered back-end storage type, SAN, SSD, or virtualization product. When the OS generates the additional I/O (Split I/O) to deal with the reported fragmentation you are not getting the full benefit from whatever storage solution the server is attached to since the performance penalty is paid at the O/S level, before the storage is accessed. It is important to understand this is all part of an overall system and the reported fragmentation will severely penalise your server I/O, making Domino less responsive, increasing Backup times, and creating a weak performance link in the overall system.
Get it here: https://www.preemptive.com.au/domino-fragmentation-analyzer/
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