Lec13_FS - File Systems CSE120 Principles of Operating...

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1 CSE120 Principles of Operating Systems Prof Yuanyuan (YY) Zhou Lecture13: I/O & File Systems Nov 16 2010 Nov 16, 2010 File Systems First we’ll discuss properties of physical disks Structure Performance Scheduling Then we’ll discuss how we build file systems on them Files Directories Sharing 11/15/2010 CSE 120 2 Protection File System Layouts File Buffer Cache Read Ahead Stages of I/O Request 11/15/2010 CSE 120 3 Physical Disk Structure Disk components Platters Surfaces Tracks Sectors Cylinders Arm Heads 11/15/2010 CSE 120 4
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