« Storing all metadata (start+end date+geoloc+from+to) of all phone calls & SMS of France for a year is ~22TB. Storing it would cost only 2K€ »

« @vincib you mean metadata of the entire French population? i.e. 63 million ppl »

« @SMaurizi yes. based on phone calls and SMS statistics by ARCEP, the telecom regulation authority. Computing of space and cost is mine. [...] Nas 8 baies syno à 800€, + 8*4To à 150€ le HDD de 4To chez LDLC. 7*4To = 28To en raid5 »