CSE Colloquium: Redesigning Storage Systems for Modern Storage Hardware

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Meeting ID: 192 822 398 

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Abstract: The interface with which we access storage devices---the "block" interface---was first introduced with hard disk drives three decades ago. Since then, it has been the dominant standard for persistent storage devices. Almost all storage software, such as file systems and databases, that manage raw storage devices are built using this interface. 

The block interface has served us well until recently, but it is quickly approaching the end of its useful life. With recent technological changes in the manufacturing of hard disk drives and solid-state drives, preserving the same block interface comes at the expense of lost performance, increased device cost, and limited device lifetime. In this talk, I will describe technological changes leading to these problems, demonstrate the overhead of keeping the block interface on modern hardware, and show how these problems can be avoided using a newly proposed "zone" interface. 

Biography: Abutalib Aghayev is a Ph.D. candidate in the Computer Science Department at Carnegie Mellon University, advised by George Amvrosiadis and Greg Ganger. He has a broad research interests in computer systems, including storage and file systems, distributed systems, and operating systems. He is the recipient of Hima and Jive Fellowship and a Best Paper award at USENIX FAST conference.