Have a standard metric for Data space used
There is currently an out of the box metric or Log Space Used, but there isn't an equivalent Data Space Used.
I get that it's a bit trickier if you have multiple data files, (even just adding them up as one metric). We have databases that we want to pro-actively allocate space for but it's hard to do without a metric to tell us when it's getting full.
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Luke L commented
I agree. It's nice to see the total size of a database, but if I want to see how much of the pre-allocated data space was used and over what time period in order to intelligently forecast future growth it gets a bit tricky.
Having a metric to assist with this would be beneficial.