We are testing trial version of MS CRM Online .
Can we export all data out of CRM anytime after go live. Is there any restriction on the volume of data we can export at any given time.
There is no limit to how much data you can export. You could use the Export to Excel feature to export your data. However if your data runs to the hundreds of thousands \ millions of rows of data you would be best to automate this via your own code or use a 3rd party add-on such as Scribe, Simego, etc to export the data.
Yes you can export the data from your CRM online organization.
However exporting data is a resource intensive operation and depending upon the type and no.of records you can export the volume of data.