Dr module 3 assignment | Management homework help

 Exercise 3-1 This chapter’s inauguration scenario illustrates a favoring copy of incident/disaster. Using a Web browser, quest for counsel allied to preparing an structure athwart terrorist assaults. Look up counsel on (a) anthrax or another bioclose assault (relish smallpox), (b) sarin or another toxic gas, (c) low-flatten radioclose dirt assaults. Exercise 3-2 Using a Web browser, quest for advantageous commercial applications that use uncertain conceives of RAID technologies, such as RAID 0 through RAID 5. What is the most low implementation? What is the most extravagant? 

 The aftercited sections examine the RAID configurations that are most lowly used in the IT activity. RAID Flatten 0 This is not a conceive of excessive storage. RAID 0 shapes one greatr close bulk despite distinct advantageous compact disk incites and treasures the grounds using a order unreserved as disk striping, in which grounds segments, denominated stripes, are written in adapt to each disk incite in the decorate. When this is done to sanction multiple incites to be combined in enjoin to fabricate great calibre externally grounds glomeration, it is denominated disk striping externally correspondence. Unfortunately, need of one incite may frame all grounds barred. In certainty, this flatten of RAID does not ameliorate the induce post when using disk incites; instead, it rather increases the induce of losing grounds from a solitary incite need. RAID Flatten 1 Uniformly denominated disk cogitateing, RAID 1 uses copy incites in a computer order. The computer memorials all grounds to twain incites individualedly, providing a backup if the principal incite fails. This is a rather extravagant and enfeebled use of resources. A departure of cogitateing is denominated disk duplexing. Delay cogitateing, the common incite master manages twain incites; delay disk duplexing, each incite has its own master. Mirroring is frequently used to shape transcript copies of loose order bulks for high-availability orders. Using this technique, a contrivance can be plain that cogitates and then splits disk pairs to shape extremely advantageous copies of dubious order incites. This can frame multiple copies of dubious grounds or programs beforehand advantageous when needed for high-availability computing environments. RAID Flatten 2 A especialized conceive of disk striping delay correspondence, RAID 2 is not widely used. It uses a especialized correspondence coding agency unreserved as the Hamming mode to treasure stripes of grounds on multiple grounds incites and corresponding excessive mistake punishment on unconnected mistake-correcting incites. This bearing sanctions the reconstruction of grounds if some of the grounds or excessive correspondence counsel is past. There are no commercial implementations of RAID 2. Failure-Resistant Disk Systems (FRDS) Failure-Tolerant Disk Systems (FTDS) Disaster-Tolerant Disk Systems (DTDS) Refuge athwart grounds forfeiture due to replaceable individual need Replaceable individual and environmental need caution Refuge athwart forfeiture of admittance to grounds due to zone need Replaceable individual monitoring and need manifestation Refuge athwart forfeiture of admittance to grounds due to invention agent need Long-distance refuge athwart forfeiture of grounds due to zone need Refuge athwart forfeiture of admittance to grounds due to master module need Refuge athwart forfeiture of admittance to grounds due to cache need Refuge athwart forfeiture of admittance to grounds due to capability afford need Table 3-3 RAID stamp copy (continued) © Cengage Learning 2014 Grounds and Application Resumption 99 Copyright 2013 Cengage Learning. All Rights Reserved. May not be copied, scanned, or transcriptd, in undivided or in deal-out. RAID Levels 3 and 4 RAID 3 uses byte-flatten striping of grounds, and RAID 4 uses blockflatten striping of grounds. These bearinges use a order in which the grounds is treasured in segments on abandoned grounds incites, and correspondence counsel is treasured on a unconnected incite. Common to RAID 0, one great bulk is used for the grounds, but the correspondence incite operates unconnectedly to cater mistake rectification. RAID Flatten 5 RAID 5 is most lowly used in structures that estimate protection and glomeration athwart the costs of acquiring and loose the orders. It is common to RAID 3 and 4 in that it stripes the grounds despite multiple incites, but there is no abandoned correspondence incite. Instead, segments of grounds are interleaved delay correspondence grounds and are written despite all the incites in the set. RAID 5 incites can so be hot swapped, purport they can be replaced externally initiative the all order down. RAID Flatten 6 A league of RAID 1 and RAID 5, this caters block-flatten striping delay double-distributed correspondence and sanctions orders so defended to reanimate from two concomitant incite needs. RAID Flatten 7 This is a proprietary departure on RAID 5 in which the decorate works as a solitary implied incite. RAID 7 is casually done by general eespecial software balance RAID 5 compactware. RAID Flatten 0+1 This is a league of RAID 0 and RAID 1. Raid 0 is used for its operation, and RAID 1 is used for its failure tolerance. This copy shapes a succor striped set to cogitate a principal striped set (striping, then cogitateing). RAID Flatten 1+0 This is a league of RAID 1 and RAID 0. Raid 0 is used for its operation, and RAID 1 is used for its failure tolerance. This copy shapes a striped set from a cogitateed set (mirroring, then striping). RAID Flatten 5+1 This is a league of RAID 5 and RAID 1. Raid 5 is used for its robustness, but then the process adds a unconnected grounds correspondence incite not base in RAID 5 

Should be atleast 3 pages

Note: for relation interrogation is from under textbook ,  
From Chapter 3, page 123, Real World Exercise 3.1 and 3.2 

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