Doi:10.1145/2076450 . 2 0 7 6 4 6 8 Globus Online manages fire-and-forget file transfers for big-data, high-performance scientific collaborations. By BRyce aLLen, John BResnahan, Lisa chiLDeRs, ian fosTeR, GoPi KanDasWaMy, RaJ KeTTiMuThu, JacK KoRDas, MiKe LinK, sTuaRT MaRTin, KaRL PicKeTT, anD sTeVen TuecKe software as a service for Data scientists emerges as a force in science,2,3 so, too, do new, onerous tasks for researchers. Data from specialized instrumentation, numerical simulations, and downstream manipulations must be collected, indexed, archived, shared, replicated, and analyzed. These tasks are not new, but the complexities involved a S B i g D ata in performing them for terabyte or larger datasets (increasingly common across scientific disciplines) are quite different from those that applied when data volumes were measured in kilobytes. The result is a computational crisis in many laboratories and a growing need for far more powerful data-management tools, yet the typical researcher lacks the resources and expertise to operate these tools. The answer may be to deliver research data-management capabilities to users as hosted software as a service, or SaaS,18 a software-delivery model in which software is hosted centrally and accessed by users using a thin client (such as a
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