Điện toán đám mây - Lựa chọn công nghệ mới cho các hãng truyền hình

©9119 i©Mm ©M^ mm -<br /> | i Lira chon cong nghe moi cho cac hang truyen hinh<br /> Dien toan dam may la md hinh phan phdi va sir dung eac dich vu<br /> CNTT dua tren Intemet, dac tnmg boi viec cung cap cac tai nguyen<br /> thudng dugc ao hoa nhu mot dich vu tren Intemet. Hau het ha tang<br /> va nen tang ciia dien toan dam may dugc cau tao thanh cac dich vu,<br /> phdn phdi thdng qua cdc trang tdm du lieu vd duge xdy dim|.ttdn?de<br /> n^' mdy chu. Tridn khai didn todn dam may se giiip cae bang traydn hinh<br /> edt giam ehi phi, tdng hidu ndng va, giam thieu cae rui ro cd thd, "iMii<br /> <br /> Nguyen Th[ Van Anh ,<br /> Nguyen Thuy Diep<br /> DAT VAN DE<br /> Mac du cdng nghe dien todn dam mdy da xudt gdm ea ede td chire traydn thdng, ydu eau mdt sire<br /> hidn each ddy vdi thap ky nhung vide thue thi cdc manh tinh todn ldn, cflng nhu cdc dich vu hosting<br /> dich vu dua trdn dam mdy lai taong ddi mdi ddi (cho thud mdy) md de sdn xudt vd phdn phdi ndi<br /> vdi ngdnh cdng nghidp traydn hinh. Khdi nidm dien dung la mdt each tidp can mdi. Bdng each tan diing<br /> toan dam may ra ddi ta nhflng ndm 1960, va md kha nang tuih toan qua mang eua bdn thir ba va<br /> hinh eua nd da thue su phdt tridn ta khi IBM sii dung nhung chirc nang tien tidn ttong vide sir dung cdc<br /> eua ede mdy tinh do hda khdng Id trong nhflng nam may khdch dugc kdt ndi mang ed ehi phi thdp hon<br /> 1980, ddn su phdt tridn eua ede trang tdm du lieu - eu thd Id ede mdy tram duge trang bi trinh duydt<br /> vdi phdn mdm do hda trdn mdt nen tang vao giua duge sir dung trong eae cdng ty traydn thdng - ede<br /> nhflng nam 2000. Trong ndm 2006, phdn eiing, bo hang traydn hinh ed thd thue hien eat giam chi phi,<br /> mach ehu, vd chip vdi cdng nghd ao hda eua Intel tdng nang sudt vd giam thidu ede rui ro ed thd.<br /> vd AMD da 1dm cho dien todn ddm mdy duge trien<br /> khai rdng rai tai ede tmng tdm du lieu, vdi cae nen<br /> CHAP NHAN CONG NGHE<br /> tang phdn eung manh me nhung hidu qua vd ehi<br /> Rd rang ddi vdi ngudi sir diong, ede cdng cu dua<br /> phi. Ddy Id mdt budc dot phd, bdi nd cho phdp chay<br /> nhidu mdy do trdn mdt mdy ehu md khdng gdy anh tren dam mdy giai quydt cae vdn dd md ede doanh<br /> hudng ddn eac chire ndng hien cd. nghiep thudng gap phai trong eac ngdnh cdng<br /> nghidp ndi chung vd ngdnh traydn huih ndiridng.Vi<br /> Cung vdi su phdt trien eua cdng nghd do hda, ede du, Salesforce eho phdp cac cdng ty quan ly cae mdi<br /> dich vu ddm mdy ngdy cdng trd ndn phd bidn, nd hd quan he khdch hdng, Google Does giup vide chia sd<br /> trg boat ddng eho phdn ldn ede doanh nghidp, bao vd ehinh sira tai Udu dd ddng hon, vd OffiSync eho<br /> <br /> <br /> <br /> TAP CHI CNTT&TT KY 1 (8.2011) I 15<br />  PHAT THANH TRUYEN HINH<br /> <br /> <br /> <br /> <br /> phdp kha ndng taong thich va cdng tde dd lam vide T I C H HOP LUONG CONG VIEC<br /> vdi cdc tdi lieu duge chia se. Trong khi dd, ede iing Cdc ung diing dua ttdn dam may rdt ly tadng dd cho<br /> dung ddm mdy lai dugc su dung true tidp vd rdng phdp vd td chirc ede nhidm vu thudng xuyen dd duy tri<br /> rai hon bdi cae cdng ty traydn thdng vdi mue dich boat ddng eiia doanh nghidp. Trong khi ed nhiing img<br /> sdng tao ndi dung. dung didn todn ddm may dae bidt hudng den ngudi<br /> Trong eac ndn Mnh td gap khd khan, vide chdp dimg cap cao, lgi thd thuc su ciia dien todn dam mdy<br /> nhdn ede gidi phdp dua trdn ddm mdy duge eci nhu ndm 6 ehd ed thd de mang cdc chirc ndng can thidt ddn<br /> mdt chidn luge thiie day phdt tridn, bdi ede hang mdt lugng ldn cua ngudi dimg. Thdng thudng, vide sir<br /> traydn hinh nhanh chdng nhdn ra gid tri md md diing cdc khudn mdu dugc thiet laptiiidc,cdctaychgn<br /> hinh dich vu nay mang lai: Giam chi phi dau ta vd tiinh don edu binh sdn vd giao dien tay chinh se mang<br /> eho phep cdc nhd cung cdp ngi dung mdi ed the lai tinh Unh boat cao hon. Cho du img diing tap trung<br /> chia se nhidu hon cdc sdng tao ndi dung. Nhflng vdo chinh sua video, ehinh sua hinh anh, sang tao<br /> lgi ich hap ddn do eho phdp cae hang traydn huih dd hga, hoat hinh bode mdt sd ydu td khde eua ludng<br /> boat ddng tinh ggn vd thdng minh hon trong vide sir cdng vide, didu quan ttgng la nd cung edp mdt cdng eu<br /> dung cdc tdi nguyen ban ehd eua minh. de sir diing giiip eac hang traydn binh tao ra vd phdn<br /> Til quan diem qudn ly, trien khai dien todn dam phdi ndi dung ttong khi dam bao cdc tidu chuan chdt<br /> may dd sir dung mdt img dung eu thd la mdt tay lugng cua minh.<br /> chgn ed chi phi ddu ta thap hon. Bang each su dung Didn toan dam may cflng tao didu Mdn thuc ddy<br /> phdn ldn cae ha tdng eiia nhd cung edp dich vu, md cdng tde chat che bon trong qud trinh san xuat eac<br /> hinh dua trdn ddm mdy giup edt gidm ehi phi tich chuong trinh traydn hinh vd phan phdi ludng cdng<br /> hgp, cai dat, duy tri, hd trg, nang cap va md rdng vide. Hinh I minh boa so dd ludng cdng vide, trong<br /> phdn cimg vd phdn mdm ddc quydn. dd cdc nhdn vidn tai ede dia diem khde nhau ed thd<br /> Hon nua, vdi co sd ha tdng vd ede dich vu phan mdm tham gia vdo qud trinh, lam viec ddng thdi vd song<br /> dugc td chirc vd quan ly bdi cac nhd cung edp djeh vu song dd thuc hien mot don dat hang hoac hodn<br /> didn todn ddm mdy, eac hang traydn hinh - du Id ehi thdnh mdt du an. Trong tradng hgp nay, eong ty<br /> ed mdt ttam hay mdt nhdm ttam phdt sdng- se ed thd traydn thdng cd thd tdi da hda gid tri vd hidu qua<br /> tiidn khai vd dp dimg cae tidn bd ky thudt mdi nhdt eua cae nhdn vien eua bo bdng cdch lua ebon va<br /> nhanh hon, thudn tidn hon vdi ehi phi hgp ly hon. giao vide theo nguyen tac diing ngudi diing vide.<br /> Ngodi ra, ede hang traydn hinh edn thu duge nhieu Hoac khi nhdn vidn tai mdt dia diem gap vdn dd<br /> lgi ich khde do ed thd 1dm vide vdi eae phdn eung ed khdng thd tidp tue tham gia ludng edng vide, cdng<br /> do tin edy vd hidu sudt cao ta xa - nhu cdc may ehu ty cd thd ngdn ngiia vide dinh tre san xuat bdng<br /> - ma ddi vdi nhflng ddi tiiiydn hinh nhd, dia phuong each eir nhdn vidn ta cdc ttam khde thay thd. Theo<br /> vide van hdnh tiiudng gap nhidu khd khan va khdng doi cdc phuong tidn traydn thdng, ede sidu du Ueu,<br /> hieu qua vd Mnh td. Cap nhdt phdn mem vd sua ldi ngudi sir dung va eac du an ta ddu ddn cudi, bdt<br /> cflng ttd ndn dd ddng vd it tdn kem hon, bdi ede tinh kd vi tri cua hg, giiip dam bao ndi dung dd dugc<br /> ndng va chirc ndng mdi dugc phdt tridn, tiiu nghidm hodn thdnh vd phdt dimg tidn dd. Nhiing tinh ndng<br /> va tridn khai nhanh chdng hon so vdi ttong cae giai nay khdng phai chi ede dam may mdi ed, nhung rdt<br /> phdp phan mdm tinyen thdng. khd dd dat duge thdi gian dap img nhanh chdng vdi<br /> <br /> <br /> <br /> 1 6 I TAP CHI CNTT&TT KY 1 (8.2011)<br />  PHAT THANH TRUYEN HINH<br /> <br /> <br /> <br /> <br /> Hinh 1. Lu6ng cdng viec vdi si; k6t hpp cda di6n toan dam mdy vd cac trgm phat s«5ng mat dat<br /> <br /> <br /> phdn mdm tai cdc tram phdt sdng tten mat ddt. SQL du phdng ed thd bd ttg manh me eac img dung<br /> Mgi dganh nghidp, du dua trdn ddm mdy hay budng du Udu, md rdng eung nhu quy md cua cdc<br /> khdng, ddu quan tdm ddn vide cai tidn ludng cdng lim tru tap tiin. Hinh 2 minh hga cdc ddm mdy dd<br /> vide vd chdt lugng san phdm cua minh, vd ddy la hga hd ttg boat ddng cho cdc ttam phdt sdng ttdn<br /> ly dc tai sao didn todn ddm mdy ttd ndn phd bidn. mat ddt, cho du chung dugc dat d bdt eu ddu.<br /> Cdc img dung dua trdn ddm mdy cung edp cae edng Vdi mdt tap cdc tdi nguyen CPU vd bd nhd RAM<br /> eu tich hgp edn thidt ddng thdi cd thd hd ttg quan ed dung lugng phii hgp, mdt ha tdng may chii do<br /> ly da phuong tien vd hgp tde Udn mach giira ngudi cdp doanh nghidp thuong quan ly vd sd cde may<br /> sii dung dugc kdt ndi mang, dg do didn todn dam ehu Web do hda dugc su dung dd vdn hanh cac<br /> mdy thiie day nhiing cai tidn nay ma khdng edn bao ttam san xudt chuong ttlnh true tidp. Mdt ha tdng<br /> dudng eo so ha tang hay ddu ta thdm. mdy chu cap doanh nghidp dd kha dung cao quan<br /> ly du Udu cua cac ttam, ttong nhidu tradng hgp<br /> CAU TRUC VA T I N H ON D I N H<br /> edn hd ttg ede tang san xuat, thu nghidm vd phdt<br /> tridn. Luu tru ttong mdt tnmg tdm du Udu ddm mdy<br /> Mdt ttong nhung lgi ich ldn nhdt ciia didn todn<br /> thudng bao gdm mdt bd thdng luu tru SAN/NAS cdp<br /> ddm mdy la ngudi dimg cudi khdng cdn phai lo Idng<br /> dganh nghiep vdi dd kha dung cao ed kha ndng sao<br /> vd cdc cdng nghd su dung dang sau. Cde nhd cung<br /> chdp ddng bd vd khdng ddng bd. Dung lugng luu trft<br /> edp dleh vu dua tten ddm mdy duy tri trung tdm du<br /> phu thudc vdo loai img dung, nhimg nd cd thd md<br /> Udu ridng cua hg, bode thud dich vu dam mdy ca<br /> rdng dd ddng dd dat dugc khdng gian luu trft ldn tdi<br /> nhdn ta cdc trung tdm dft Udu doanh nghidp cd kha<br /> petabyte.<br /> ndng cung cdp co sd ha tdng, mdy ehii ao hda quy<br /> md ldn md ttdn do vdn bdnh ede img dung, may chii Tdt ea cdc cdng nghd ndy dugc tridn khai ddng bd<br /> <br /> <br /> TAP CHI CNTT&TT KY 1 (8.2011) |l7i<br />  PHAT THANH TRUYEN HINH<br /> <br /> <br /> <br /> <br /> Hinh 2: Nguoi sir dung trong Newsroom co thg truy nhap do hpa trpng ddm may tir NRCS hay mpt trinh duyet<br /> <br /> <br /> vdi eae thidt hi an ninh mang vd phdn phdi mang du ndi T3 bode 20Mb/s. Bdi vi kdt ndi Uitemet dua ede<br /> phdng 6 mdi tram. Cae thidt bi quan ly luu lugng vd dich vu hinh anh vd video vdo cde phuong tien phat<br /> edn bdng tdi trong tram vd ngodi tram du phdng cdn sdng, ho trg thdng tui lien lac vd cde edng eu nghidn<br /> bang tai luu lugng giua cdc may chu web vd cdc may euu, hdu hdt ede phuong tidn ndy ddu thiet lap cdc<br /> ehu du lidu khde nhau trong he thdng. Nhung thidt he thdng du phdng dd dam bdo tray cdp Udn tue.<br /> bi duy tri bleu nang bdng cdch bao dam rang mac Uitemet Id mdt edng cu hidu qua dd traydn tdi dft<br /> dii cd hdng ttdm hoac hang ngdn ngudi sir dung, Udu, tay nhien vide thue thi cdn phu thudc vdo cdc<br /> khdng may ehu ndo chay qua vdi nhidu yeu edu edng eu sdng tao ndi dung dua tren ddm may.<br /> cua ngudi su dung, ddng thdi eho phep mo rdng dd Vide thuc thi vd dap img cua nhftng edng eu se phu<br /> ddng quy md eua eae mdy ehu Web. Dd bao ve ndi thude nhidu vao vide thidt kd cde img dimg dien todn<br /> dimg ben trong ddm mdy, hd trg boat ddng Udn tue ddm may, chu khdng phai edu hinh vd dung lugng<br /> vd cung edp khde phuc thdm hpa, ede thidt bi ndy mang. Trong khi ddm may eho phep cac img dung,<br /> thue hidn chdng trung lap du Udu, nen, ma hda vd nd ed thd duge coi Id ydu td it quan ttgng nhdt ttong<br /> sao luu 6 cdc tram dft Udu ehinh, eiing nhu gifta cdc vide chdp nhdn mdt dich vu dua tten ddm may. Trong<br /> ttam duge phdn phdi theo dia ly. Nhidu mang dudng mdi tradng phdt sdng, yeu eau quan ttgng la kha ndng<br /> true Intemet hdi tu ttong trang tdm dft Udu edp cao taong tac vdi cac he thdng hidn cd, de su dung va chiic<br /> dd cung cap du phdng, dam bdo thdi gian boat ddng ndng taong img vdi vai ttd eua eac dich vu vd moi<br /> vd dam bdo hieu sudt bdng thdng cao ngay ca ttong ngudi dimg ttong ludng cdng vide tdng thd.<br /> thdi gian khung hoang. Cde thoa thudn edp dich vu<br /> Tai lieu t h a m khao<br /> giai quydt nhiing mdi quan tdm thdng thudng rihu<br /> bdo mdt, hidu ndng, khdi phuc dft Ueu vd bao tri. [1]. GREG LENNON, Cloud computing for broadcasters,<br /> Broadcastengineering, June 2011<br /> Cdc hang traydn hmh ed thd kdt ndi vdi eac dam<br /> [2]. DOUGLAS I. SHEER, Broadcasting in the Cloud Cloud<br /> mdy hieu qua thdng qua cdc kdt ndi bang thdng<br /> Computing Opportunities In the Media Sector, 11/2010.<br /> thdp vd cao, ta mdt modem cap ddn mdt dudng kdt<br /> <br /> <br /> 1 8 I TAP CHI CNTT&TT KY 1 (8.2011)<br />