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How large is a Petabyte??

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Super, cele mai interesante texte mi s-au parut cum ca google proceseaza 20PB/zi si ca intreaga "lectura" scrisa vreodata de om ar intra in 50PB.

Oare cand apare pe piata, la indemana oricui, hdd de 1PB?

Care va fi viteza de acces a hdd-ului si cea de scriere citire?

Oare tehnologiile actuale de stocare vor fi inlocuite de ceva nou? personal mi-e greu sa cred ca hdd constuite cu tehnologia actuala vor avea atata spatiu fara a avea un deficit imens de viteza....ce companie va gasi solutia?

Ca in trecut ne e greu sa concepem ce ne-ar putea umple hdd incat sa folosim unul asa de mare, fiindca ne raportam la prezent, teoretic evolutia softurilor va cere o tehnologie hardware mai performanta si invers, oare ce-am putea stoca peste 10 ani sa zicem, presupunand ca at vor fi pe piata asa "hdd-uri"?

(Un mic joc de imaginatie pt cine are chef ;-) )

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Sunt de acord, pentru ca hdd este cea mai lenta componenta dintr-un pc, so....probabil ca o solutie ingenioasa va aparea cat de curand...sau macar o alternativa.

Personal ma bate gandul de ceva timp sa imi iau 2-4 hdd identice si la le pun in raid, mirror, a.i. viteza de citire scriere va fi de pana de 4 ori mai mare :D, dat fiind faptul ca prin mirror sunt scrise fragmente de fisier simultan pe toate hdd.

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We live in the data age. It’s not easy to measure the total volume of data stored elec-

tronically, but an IDC estimate put the size of the "digital universe" at 0.18 zettabytes

in 2006, and is forecasting a tenfold growth by 2011 to 1.8 zettabytes (*). A zettabyte is

10^21 bytes, or equivalently one thousand exabytes, one million petabytes, or one billion

terabytes. That's roughly the same order of magnitude as one disk drive for every person

in the world.

This flood of data is coming from many sources. Consider the following:

• The New York Stock Exchange generates about one terabyte of new trade data per

day.

• Facebook hosts approximately 10 billion photos, taking up one petabyte of storage.

• Ancestry.com, the genealogy site, stores around 2.5 petabytes of data.

• The Internet Archive stores around 2 petabytes of data, and is growing at a rate of

20 terabytes per month.

• The Large Hadron Collider near Geneva, Switzerland, will produce about 15

petabytes of data per year.

(*)http://www.emc.com/collateral/analyst-reports/diverse-exploding-digital-universe.pdf

Fragment luat din "Hadoop The Definitive Guide"


http://rapidshare.com/files/242828981/oreihadop.rar

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