Data Sampling Rate

[EricS51]

I am using NI 9235 modules with strain gauges and the software has a minimum sampling rate for these of 754 hz.  Currently the data files from a single gauge are too large for my computer, it will record data for 2-3 minutes.  This is what I need help with: 1) changing the sampling rate to 1 measurement every 30 minutes, 2) recorded history to last for up to 60 days, and 3) for the data to be stored to an attached external hard drive rather than the computer itself.  All this needs to be done for 12 individual strain gauges running at the same time. 

I have not been able to find this in any of the online forums yet, can someone please help? 

[crossrulz]

You could just read all of the data from something like every 100ms.  You can just throw it away until you reached 30 minutes.  At that point, just keep the last sample and save it.

[EricS51]

How would you set that up to do it automatically?  I am completely new to the software, I was able to figure out the wiring and the basic settings to be able to read each gauge.  Its the collecting and storing data that I cannot figure out.