CS330 Study Guide - Midterm Guide: Digital Object Identifier, Operational Excellence, Local Area Network

• School: University of Waterloo
• Department: Computer Science
• Course: CS330
• Professor: Kevin Lanctot

Document Summary

It infrastructure the shared te(cid:272)h(cid:374)ology resour(cid:272)es that pro(cid:448)ide the platfor(cid:373) for the fir(cid:373)"s i(cid:374)for(cid:373)atio(cid:374) syste(cid:373) applications. Database management system (dbms) : organize and store (cid:272)o(cid:373)pa(cid:374)y"s data. Data storage: hard disk drives, tape drives (portable, remote offsite backup), cloud-based storage. Use redundant array of independent disk(raid) to improve hard disk performance. Many hard drives to achieve improvements in reliability, availability, performance, capacity. Raid 0 raid 6 (difference balance of improvements) Store a copy of the data on another disk. Improved reliability: if one fails, use the other. Improved read performance: if one is busy, read the data from the other. Decreased capacity: using twice as much space to store a file. Disk striping : store sequential data on alternating disks. Block 1,3,5 on disk 1; block 2,4,6 on disk 2. Improve performance: bandwidth twice as fast as a single disk. Decrease reliability: file is corrupted if only one of the two disks fail.