DR Module 3 Assignment

Exercise 3-1 This chapter’s aperture scenario illustrates a unfair symbol of incident/disaster. Using a Web browser, pursuit ce referableification connected to preparing an structure opposite terrorist onsets. Look up referableification on (a) anthrax or another bioclose onregular (love smallpox), (b) sarin or another toxic fog, (c) low-equalize radioclose contamination onsets. Exercise 3-2 Using a Web browser, pursuit ce profitable interchangeable applications that truth manifold cems of RAID technologies, such as RAID 0 through RAID 5. What is the most vile implementation? What is the most extravagant?

The controlthcoming sections argue the RAID configurations that are most vilely truthd in the IT activity. RAID Equalize 0 This is referable a cem of luxuriant storage. RAID 0 composes undivided wider close compass opposite sundry profitable constrained disk stimulates and shops the axioms using a rule knconfess as disk striping, in which axioms segments, designated stripes, are written in spin to each disk stimulate in the vest. When this is dundivided to yield multiple stimulates to be in-individual in dispose to mould wide distributes extraneously axioms glomeration, it is designated disk striping extraneously resemblance. Unfortunately, want of undivided stimulate may constitute total axioms unavailable. In reality, this equalize of RAID does referable emend the surrender site when using disk stimulates; instead, it rather increases the surrender of losing axioms from a individual stimulate want. RAID Equalize 1 Vilely designated disk cogitateing, RAID 1 truths twin stimulates in a computer rule. The computer history total axioms to twain stimulates concertedly, providing a backup if the primitive stimulate fails. This is a rather extravagant and frail truth of resources. A deviation of cogitateing is designated disk duplexing. With cogitateing, the identical stimulate guide manages twain stimulates; with disk duplexing, each stimulate has its confess guide. Cogitateing is frequently truthd to compose facsimile copies of frank rule compasss ce high-availability rules. Using this technique, a contemplation can be exposed that cogitates and then splits disk pairs to compose greatly profitable copies of discriminating rule stimulates. This can constitute multiple copies of discriminating axioms or programs early profitable when needed ce high-availability computing environments. RAID Equalize 2 A distinctiveized cem of disk striping with resemblance, RAID 2 is referable widely truthd. It truths a distinctiveized resemblance coding contrivance knconfess as the Hamming code to shop stripes of axioms on multiple axioms stimulates and resembling luxuriant fallacy emendation on detached fallacy-correcting stimulates. This way yields the reconstruction of axioms if some of the axioms or luxuriant resemblance referableification is obsolete. There are no interchangeable implementations of RAID 2. Want-Resistant Disk Rules (FRDS) Want-Tolerant Disk Rules (FTDS) Disaster-Tolerant Disk Rules (DTDS) Guard opposite axioms dropping imputable to replaceable distribute want Replaceable distribute and environmental want referable attributable attributableice Guard opposite dropping of adit to axioms imputable to zundivided want Replaceable distribute monitoring and want sign Guard opposite dropping of adit to axioms imputable to project medium want Long-distance guard opposite dropping of axioms imputable to zundivided want Guard opposite dropping of adit to axioms imputable to guide module want Guard opposite dropping of adit to axioms imputable to cache want Guard opposite dropping of adit to axioms imputable to strength yield want Table 3-3 RAID group example (continued) © Cengage Learning 2014 Axioms and Application Resumption 99 Copyright 2013 Cengage Learning. Total Rights Reserved. May referable be copied, scanned, or facsimiled, in gross or in distribute. RAID Equalizes 3 and 4 RAID 3 truths byte-equalize striping of axioms, and RAID 4 truths blockequalize striping of axioms. These wayes truth a rule in which the axioms is shopd in segments on ardent axioms stimulates, and resemblance referableification is shopd on a detached stimulate. Resembling to RAID 0, undivided wide compass is truthd ce the axioms, save the resemblance stimulate operates inconsequently to collect fallacy resuscitation. RAID Equalize 5 RAID 5 is most vilely truthd in structures that adjust insurance and glomeration opposite the costs of acquiring and frank the rules. It is resembling to RAID 3 and 4 in that it stripes the axioms opposite multiple stimulates, save there is no ardent resemblance stimulate. Instead, segments of axioms are interleaved with resemblance axioms and are written opposite total the stimulates in the regular. RAID 5 stimulates can besides be fiery swapped, purport they can be replaced extraneously entrance the unimpaired rule down. RAID Equalize 6 A alliance of RAID 1 and RAID 5, this collects block-equalize striping with double-distributed resemblance and yields rules so guarded to repossess from couple concurrent stimulate wants. RAID Equalize 7 This is a proprietary deviation on RAID 5 in which the vest works as a individual implicit stimulate. RAID 7 is casually effected by vulgar distinctive software aggravate RAID 5 constrainedware. RAID Equalize 0+1 This is a alliance of RAID 0 and RAID 1. Raid 0 is truthd ce its work, and RAID 1 is truthd ce its imperfection tolerance. This example composes a avoid striped regular to cogitate a primitive striped regular (striping, then cogitateing). RAID Equalize 1+0 This is a alliance of RAID 1 and RAID 0. Raid 0 is truthd ce its work, and RAID 1 is truthd ce its imperfection tolerance. This example composes a striped regular from a cogitateed regular (mirroring, then striping). RAID Equalize 5+1 This is a alliance of RAID 5 and RAID 1. Raid 5 is truthd ce its robustness, save then the manner adds a detached axioms resemblance stimulate referable base in RAID 5

Should be atleast 3 pages

Note: ce regard inquiry is from underneath textbook ,
From Chapter 3, page 123, Real World Exercise 3.1 and 3.2

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