Hi!
Domas gave a very interesting link above:
Anyway, there's a bit more visual expression of our data sizes within core databases: http://spreadsheets.google.com/pub?key=pfjIQrTbpVkaIStok1hWAdg
I suppose in the s1 worksheet data_length and index_length are in bytes, and calculating the enwiki database size is approx. (data_length + index_length) / (1024 * 1024 *1024) GB, in case of enwiki db is roughly 334 GB.
But how can I interpret the s2/s3 worksheets? What means the data and index columns, and in what unit?
I'm just curious :)
Farewell, Glanthor