This was originally published at ZDNet's Between the Lines.
Facebook's photo storage system holds 850 million photos and costs a lot of dough. Niall Kennedy has a nice overview of what Facebook is doing to minimize its storage costs.
Facebook's system, dubbed Haystack, is custom-built but relies on content delivery networks and NetApp. Facebook is trying to minimize the custom stuff and use commodity hardware.
Kennedy does a nice job of synthesizing Facebook's storage system. In a nutshell:
Facebook's previous system relied heavily on Akamai and Limelight to improve latency. That Akamai and Limelight use … Read more