PPT-Chapter 8 Adding Disks

Chapter 8 Adding Disks Loops Run instructions again and again and again Check some condition If true repeat 2 types of loops for loop while loop First the variable used in loop condition must be initialized then execution of the loop begins. Lecturer: . Ofer. Rothschild. 1. Problem with the borders. 2. Meshes without borders. Given a set of points in [1/4, 3/4]X[1/4, 3/4]. With diameter > ½. The points are vertices in the triangulation. to Achieve . Temporal Coverage of Objects and . Its Surveillance . Application. You-. Chiun. Wang, Yung-Fu Chen, and Yu-. Chee. Tseng. IEEE TRANSACTIONS ON MOBILE . COMPUTING 2011. Outline. . Introduction. a. nd stellar multiplicity. Insights from recent surveys. Gaspard . Duchêne. (UC Berkeley, Obs. Grenoble). © NASA/JPL/Caltech. Planets in multiple systems?. © . LucasFilm. Ltd.. They must exist!. and Subtracting . Fractions. Pre-Algebra. Objectives. Add . proper fractions. Subtract proper fractions. Solve a word problem involving . . addition and subtraction of fractions..  .  .  .  .  . Phil Armitage. Colorado. Processes in Protoplanetary Disks. Disk structure. Disk evolution. Turbulence. Episodic accretion. Single particle evolution. Ice lines and persistent radial structure. Transient structures in disks. ASHIMA KALRA . . Hard disks.. . Floppy disks.. . CD ROMs.. . DVDs.. . INDEX. ….. Floppy Disks. The first floppy disks were 8 Inches in diameter.They hold upto 256 KB.. The next generation were 5.25 inches in diameter.It Could hold up to 1.44 MB.It is a standard one.. and RAID. Outline. Disks. Disk scheduling algorithms. Redundancy in storage . systems, RAID. 2. Disk Geometry. Disks have multiple platters. Each platter has . an arm and a head for accessing data. The arms for the different platters move together. (DRAM). Local secondary storage. (local disks). Larger, . slower, . and . cheaper . (per byte). storage. devices. Remote secondary storage. (distributed file systems, Web servers). Local disks hold files retrieved from disks on remote network servers.. Adding multiples of ten to any number. 7 10. 7 20. 7 30. 7 40. 15 10. 15 20. 15 30. 15 40. 19 10. 19 20. 19 30. 19 40. 23 10. 23 20. 23 40. 23 50. 36 10. 36 30. 36 50. Two main types: Magnetic and Optical. Random access to memory. The hardware must be controlled by driver software called the “controller” in order to be used. Hard Disks, RAID, and Error Handling. Diagramming Sentences Adding basic modifiers… Diagramming’s Modifiers go underneath that which they modify… Prime Directive: Adding adjectives… Seldom do we have sentences that only have a subject and verb Look how easy it is to add ‘er’ to these words. Have a go at adding ‘er’ to these Did you get them right ? It is just as easy to add ‘est’ to these words. shortshorter CSE 2431: Introduction to Operating Systems. Instructor: Adam C. Champion, Ph.D.. Reading: Chap. 11. , §§13.5, 14.5.6 . [OSC]. Outline. Disk Organization. Disk Performance. Disk Scheduling Algorithms. Don Porter. Portions courtesy Emmett . Witchel. 1. Quick Recap. CPU Scheduling. Balance competing concerns with heuristics. What were some goals?. No perfect solution. Today: Block device scheduling.