+"128d" commonly denotes a specific [Duration](/wiki/Duration) or a [Data Format](/wiki/Data_Format) within various technical systems. It often refers to a measure, frequently a power of two, critical in defining limits or capacities.
+## See also
+- [Bit](/wiki/Bit)
+- [Power of Two](/wiki/Power_of_Two)
+- [Data Storage](/wiki/Data_Storage)