Data or Datas? Singular Plural

Data is the plural form of the singular latin word Datum.

Now a days, Data acts as both Singular and Plural.

Datas is the wrong representation.

Suppose if you have two files containing some amount of data it is not two data or two datas it is simply "Data"

Another word that has no plural is "Furniture"

Similarly,

Media is the singular form of Medium

Spectra is the singular form of Spectrum - Plural