Just because it's been phased out at Google doesn't mean it's not worthwhile. There's a lot to be learned and a lot of value to be gained out of building GFS be

Just because it's been phased out at Google doesn't mean it's not worthwhile. There's a lot to be learned and a lot of value to be gained out of building GFS before Colossus (Though that example is getting out of date - I would no longer recommend that anyone try to build a GFS-Patterned distributed filesystem, but for several years after the party I attended to celebrate the final death of GFS I would still recommend that new-unicorns looking to build their own distributed filesystem layer go for the GFS Architecture first). There's a lot of techniques and tools that are no longer in favor at Google not because they're not the best available SRE tools, but because that's how far Google has fallen from grace.