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1、 (1 S ), 30 , 3 , 72null75: ,2010M 9Journalof BaojiUniversity of Arts andSciences (NaturalScience),Vol.30,No.3,pp.72null75,Sept.2010 9 # ? Z 8 *李建卓( 9 S , 721007)K null 1 : null 介绍云计算的定义a特点a关键技术和发展现状bZ E null 总结了谷歌a微软aIBM和亚马逊等著名IT公司的云计算技术,并对云计算的未来发展进行了展望b T null 云计算大大降低了计算成本,推动了互联网技术的发展b1 o M :云计算;互
2、联网;虚拟技术 m s | :TP393null null null D S :A null null null c I | :1007null1261(2010)03null0072null04Survey of cloud computing and its developmentLI Jiannullzhuo(Dept. Computer Sci., BaojiUniv. Arts & Sci., Baoji 721007, Shaanxi, China)Abstract: Aimnull To introduce the definition, character, key techn
3、ology and current situation ofcloud computing.Methodsnull By summing up thecloud computing technologies of the four famous ITcompanies, namely Google, Microsoft, IBM and Amazon, cloud computing is investigated, and outnulllook on thefuturedevelopment of thecloud computing.Results and Conclusion null
4、 Thecloud computinggreatlyreducethe cost of computing, and promotethedevelopment of theInternet technology.Key words: cloudcomputing; internet; virtual technology1null / f ? Z , y 9 , 9 9 ? i % ? p b. d % Z E Y V 5 ! ! L C y 9 v i % , v v 4 n ,i O ! ! 9 F P i % 8 W s 9 v , N / i % 4 s 5 b f / , 9 /
5、7 3 b 9 | ) ) 9 9 ) , V r 9 1b1 V 9 Q 4 , Y 5 ,V 7 4 V L b2) Z 9b 9 ? Z v ? ,. c $ H ) 10b 9 V V 2 Z _ Z b3) V 11b 9 d , C p . ? 3 r f Y d by 9 V 1 _ C p r ,i O V | C p r b b4) E / 8b 9 B E , | q ! ! E ,i Y V P V P = 9 b5) N 8b 9 | ) 9 ) , 9 ! ! 6 ) , n , V 9 ) ,V 7 v v h b3null 9 1 o / ? Z C 3.1nul
6、l 云计算的关键技术 9 # 1 o / , i % / aI Z T E / b3.1.1null 数据存储技术 9 $ ,| s T i % Z T L i % b I n i % a i % # V L 5 b 9 i % / 1 V ! GFS(Google File System), D 12 ! i % s / % b ! Y , C B N i % / , 7 HDFS ( Hadoop Distributed File System )13null14aKFS15 Sector/Sphere16 bIBM null HDFS i % / bN ,B t IT 9 4 B t i
7、 % % Z b : 4 Skydrive17, Upline18 #Sun N19b3.1.2null 编程方式 9 4 s T 9 T ,Z 4 1 pA s T I T b - , 9 ,= $ d E b T C ! z $ d E , by N A r Z b 9 i % 4 K bW ,9 ) 4 K 9 ? , 5 1 - F 9 ? i P b P 9 H , b# 1 - i b , P 3 , ,1 r % 5 , 9 A I n Z % Z ,4 O z ! 9 , A 1 L V 9 b4.2null 网络的性能问题4 ? 9 9 G B b P 9 7 , z P 9 ? v u | h ,yN 1 v ? Z / bN , 9 r ) , 9 1 ! ? , H 9
