@something1965 : Did you record exactly the same programming on exactly the same channel? Different channels have different bitrates, therefore take up different amounts of HDD space. Also, 8 hours may not be enough to be accurate enough to compare, although I can see where you're coming from.
The other item is something called "media shrink" which compresses recordings when the box is not busy. Perhaps the one box had not yet had the opportunity to "shrink" the recordings. Once shrunk, the recordings typically take only about 60% of the original recording space.
You can see if media shrink is working by looking at the HDD space before going to bed, after having recorded a fair bit, and then looking again the next day. There should be more space available after media shrink. Media Shrink is also on one of the pages of the diagnostics:
@something1965 wrote:The Purchased one (before I factory reset it) had 26 X 1h hour programs and said it was approx 85% full while the Rental box was about 40% that for roughly the same amount, mostly same programs.
That makes no sense for 26 hours - it's way too much and may have contained a "runaway" recording or something similar. You should be able to now test anew. A one hour new recording should be around 1% and a one hour shrunk recording should be around 0.6%. I just deleted 9 hours of F1 programming from the weekend and recovered 5% of my HDD space.
@something1965 wrote:I recorded 2 X 1 hour programs
Soon as recordings stopped it was something like 1.35 % remaining but then rose up to around 1.73% after 45 minutes then it went back down to 1.06 at the 1 hour mark to right where is should be and where it still remains 2 days later.
I assume you mean 1% full, not 1% remaining. Looks like it's working properly now. With very small amounts recorded, the accuracy of the calculation may be off, but it should increase in accuracy once you have more recorded.
