BEGIN:VCALENDAR PRODID:-//Microsoft Corporation//Outlook MIMEDIR//EN VERSION:1.0 BEGIN:VEVENT DTSTART:20151118T233000Z DTEND:20151119T010000Z LOCATION:Hilton Salon A DESCRIPTION;ENCODING=QUOTED-PRINTABLE:ABSTRACT: Storage has seen a somewhat circular evolution over the past decade. Lack of scalability for POSIX namespaces led to flat namespace object stores. New concerns however are emerging: the lack of hierarchical namespace, to which we're accustomed, is a hindrance to widespread object store acceptance. Emerging systems are now accessing a POSIX-like namespace layered above an object store. Have we returned to our starting point or have we made actual progress? This BOF presents talks about this trend, discussion of two exemplar systems (LANL and EMC) and their pitfalls, their relationship to burst buffers, and a panel discussion. SUMMARY:Two Tiers Scalable Storage: Building POSIX-Like Namespaces with Object Stores PRIORITY:3 END:VEVENT END:VCALENDAR