For EMC storage arrays you are able to collect and archive performance data and export a NAR file using Navisphere/Unisphere.
In order to read the data collected you can convert the archive dump file to CSV format using the Navisphere CLI, by invoking the following command:
C:\Program Files (x86)\EMC\Navisphere CLI\NaviSECCli.exe analyzer -archivedump -data <filename.nar> -out <filename.csv>
In order to run the above you will require Navisphere CLI installed.