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IT 320 Operating Systems Concepts Seminar 7 Dr Jeffrey A Robinson Basic Info Kaplan id – DrRobinson Email – [email protected] AIM ID – DrJARobinson SKYPE – jarobinson15 Office Hours 8-10 Saturday (MST) – 10am-12pm EST Alternate email [email protected] Logistics 10 weeks Seminars – Wednesdays 8-9m EST No groups, individual work only No Quizzes Basic Course Agenda Unit 1: The World of Operating Systems Unit 2: An Introduction to operating Systems Concepts Unit 3: Introduction to Linux Unit 4: Processes, Treads and Deadlocks Unit 5: Memory Management Unit 6: Scheduling with Uniprocessor and Multiprocessor Unit 7: File Management Unit 8: Security Risks and Data Protection Unit 9: Distributed Computing and Networking Unit 10: Wrapping up! Note: there ARE no group activities in this course. All work and assignments will be completed individually. While collaboration is encouraged, each student shall turn in their own work. IT320 readings Unit 7 Readings - Chapter 12 Project - Part1: Select one operating system you are familiar with. Write a one-page summary that lists and explains the utilities provided by the operating system to manage the file system. How often should these utilities be executed? How is file security implemented? Part2: Write a one-page summary examining the file systems including the directory structure for windows operating system by comparing FAT16/FAT32 and NTFS file systems. benefits of each? Why would one file system used over the other? Part3: Write a one-page summary examining the various file systems available to Linux including the directory structure and compare them to the windows file system. Be sure to list differences and similarities. Note that your paper will be longer than three pages (title page, table of contents, references, illustrations, etc.) APA style. Vocabulary NTFS: New Technology File System is the file system of choice used in today’s Microsoft OSs (2000, XP, Vista, 2008). It is a Microsoft proprietary file system that provides many improvements over the old FAT file system, such as better security, extensions, longer names, etc. FAT: File Allocation Table use to be the defacto standard for all operating systems and is still supported by practically all. FAT can make due as a relatively easy to support file system but has many limitations – mostly with security features and the inability to support long names. Indexing: Marking for faster reading by appending an index to the location of a file on the hard disk as it is read. This provides for faster retrieval at a later time. VFS: Virtual File System could be thought of as an abstraction to the file system sitting on top of a native file system to the OS. It serves the function of intermediary translating between two different file systems. Field: a basic element of data containing a single value. File, Table, Hash, Key (Primary, secondary, foreign), 1st 2nd and 3rd Normal forms, Relational database Questions? Ask Now Minilecture #1 Unit 7 – What is a file; extensions; fragmentation; i/o performance Race car in rush hour Reports that can shut down a system Ways to mitigate I/O – – – – – – – – Defer (off peak periods) Share outputs (read one rather than generate hundreds) Secondary/DR machines – transaction shipping I/O segregation Extracts (Data Marts) Aggregates (Data Warehouse) Relational databases – fast to read, slow to write RAID Basic Course Agenda Unit 1: The World of Operating Systems Unit 2: An Introduction to operating Systems Concepts Unit 3: Introduction to Linux Unit 4: Processes, Treads and Deadlocks Unit 5: Memory Management Unit 6: Scheduling with Uniprocessor and Multiprocessor Unit 7: File Management Unit 8: Security Risks and Data Protection Unit 9: Distributed Computing and Networking Unit 10: Wrapping up! Note: there ARE no group activities in this course. All work and assignments will be completed individually. While collaboration is encouraged, each student shall turn in their own work.