Going Hardway: HardMemoryLimits in SSAS Properties

When I first started administering SSAS, the HardMemoryLimit is a property on SSAS instances that I never used to really take much notice of. After all, there's the LowerMemoryLimit and the UpperMemoryLimit, and once these are set, they are set in stone right? Right? Wrong. When SSAS does not have enough memory, it will be allocated more memory.