cloud computing: i vantaggi della gestione dati on-demand - t2i... · cloud computing is a model...
TRANSCRIPT
![Page 2: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/2.jpg)
Verso il Cloud Computing
• Premessa • Definizione • Obiettivi • Fattori abilitanti • Terminologia
![Page 3: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/3.jpg)
Evoluzione
Pochi cambiamenti epocali nella storia della tecnologia informatica.
Molti piccoli cambiamenti. I cambiamenti epocali sono resi possibili
dall’accumulo di cambiamenti minori (ma è difficile riconoscerli prima che siano in stadio avanzato)
![Page 4: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/4.jpg)
Evoluzione
Es: ENIAC ! smartphone ARPANET ! internet CERN html/http ! modern WWW
(500*109 GB, 2009, raddoppia ogni 18 mesi)
![Page 5: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/5.jpg)
Impatto
I cambiamenti ITC epocali hanno avuto effetti
significativi sulla vita quotidiana, sull’organizzazione della società, sul modo di gestire le imprese
![Page 6: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/6.jpg)
Es: giornali Graduale diminuzione del peso della carta stampata Inizialmente unico canale per la diffusione delle
informazioni. Multiple edizioni per giorno. Canali alternativi: radio, TV Edizioni del mattino. Focus su analisi degli avvenimenti. Nuovo canale: WWW Spostamento degli investimenti pubblicitari Nuovo canale: dispositivi mobili Nuovi modelli di business. Sparizione di alcuni giornali. Tutto questo prima del cloud computing
![Page 7: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/7.jpg)
Es: giornali
Verso l’estrazione delle notizie, non solo la consegna.
• Serve maggiore potenza di calcolo per fornire le notizie rilevanti per l’utente
Problema: gestire la scarsità • Come gestire al meglio le risorse disponibili? Come
ottenerne di nuove?
![Page 8: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/8.jpg)
Visione: migliore, più veloce, più economico
Obiettivo: Computing—computation, storage,
communication—is relatively free, scales up or down as needed, scales as much as needed, operates itself, and always works.
Utopia?
![Page 9: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/9.jpg)
Evoluzione
I era: computer II era: internet III era: cloud computing
![Page 10: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/10.jpg)
I era (‘50-’90)
• Attenzione all’interno delle aziende • Inizialmente grandi sistemi centralizzati, poi
sistemi distribuiti • Infrastrutture associate alle applicazioni
(applicazione importante= infrastruttura costosa)
• Ascesa dei DB e dei sistemi di storage
![Page 11: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/11.jpg)
II era
Internet Accesso universale Ubiquità Smart-devices hanno reso l’utilizzo dei servizi
largamente diffuso anche tra ‘non-tecnici’ Maggior contributo della seconda era: la rete
![Page 12: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/12.jpg)
II era
L’infrastruttura continua ad essere: • costosa • difficile da mantenere • Sovradimensionata (affidabilità)
![Page 13: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/13.jpg)
Durante la I e II era
Corsa alla scalabilità: • Da hardware indipendente ad hardware collegato in
rete, processori singoli a processori multipli. • Maggiore complessità derivante dal parallelismo • Yahoo: <1000 siti nel 1994, <10000 nel 1995,
successivamente raddoppiava ogni 53 giorni
Corsa al risparmio • Utilizzo di ‘commodity computers’ • Affidabilità?
![Page 14: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/14.jpg)
III era
Google (inizialmente) ‘vince’ la corsa all’indicizzazione WWW • Automazione raccolta • Infrastruttura basata su elementi poco costosi ed
inaffidabili (singolarmente) • Gestione dati distribuita • Automatizzazione gestione sistema • Malfunzionamenti parzialmente tollerabili
Offerta all’esterno dei servizi e delle risorse
![Page 15: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/15.jpg)
III era
Amazon: • Infrastruttura IT classica • Esposizione singoli servizi all’esterno • Decomposizione delle applicazioni in servizi • Virtualizzazione
Offerta all’esterno dei servizi e delle risorse
![Page 16: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/16.jpg)
III era
Computing—computation, storage, communication—is relatively free, scales up or down as needed, scales as much as needed, operates itself, and always works.
L’utopia si sta lentamente realizzando
![Page 17: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/17.jpg)
Fattori abilitanti • Hardware economico: compensato da applicazioni
affidabili • Velocità rete • Virtualizzazione • Architetture software: composizione componenti, SOA • Storage: evoluzione DB, approcci innovativi, evoluzione
infrastrutture storage • Accesso pervasivo • Società: aspettative (eg: Google sempre disponibile e
con risposte ad ogni domanda)
![Page 18: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/18.jpg)
Definizioni
cloud computing Cloud computing is on-demand access to virtualized IT resources that are housed outside of your own data center, shared by others, simple to use, paid for via subscription, and accessed over the Web.
As a service? Cloud private?
![Page 19: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/19.jpg)
Definizioni Cloud computing is a model for enabling convenient, on-
demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. This cloud model promotes availability and is composed of five essential characteristics, three delivery models, and four deployment models.
Commodity hardware? Pochi blocchi base?
![Page 20: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/20.jpg)
Definizioni Cloud computing is a type of computing that provides simple, on-
demand access to pools of highly elastic computing resources. These resources are provided as a service over a network (often the Internet), and are now possible due to a series of innovations across computing technologies, operations, and business models. Cloud enables the consumers of the technology to think of computing as effectively limitless, of minimal cost, and reliable, as well as not be concerned about how it is constructed, how it works, who operates it, or where it is located.
Cloud computing is a style of computing where computing resources
and are easy to obtain and access, simple to use, cheap, and just work.
![Page 21: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/21.jpg)
Caratteristiche essenziali
• Scalabilità Elasticità • Ubiquità dell’accesso • Virtualizzazione totale: semplicità, più server
virtuali devono apparire un solo server • Consistenza: pochi (anche 3 o 4) blocchi
base • Commodity hardware • Affidabilità • Multi-azienda e multi-applicazione
![Page 22: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/22.jpg)
Layer principali
![Page 23: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/23.jpg)
Tipologie
• Privata • Pubblica • Verticale (community) • Ibrida
![Page 24: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/24.jpg)
Posizione
• Container • Raffreddamento: verso nord (sud) • Bassa densità
![Page 25: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/25.jpg)
Cloud Computing
![Page 26: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/26.jpg)
Cloud e dintorni
Il cloud computing deve funzionare nel mondo reale
• Co-esitenza di apparecchiature di generazioni diverse integrate in vario modo
Relazioni tra componenti dell’infrastruttura: • SOA • web services • grid computing • clusters
![Page 27: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/27.jpg)
Service oriented architecture (SOA)
1980-90: software applicativo monolitico, dipendenze circolari, integrazione stretta. Sviluppo Object oriented ha permesso di aumentare l’indipendenza dei componenti.
Risultato: largo numero di componenti semplici Più facili da sviluppare e mantenere
![Page 28: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/28.jpg)
Service oriented architecture (SOA)
OO: vengono rimosse le dipendenze inutili. Il software continua ad essere strettamente integrato
Difficoltà a distribuire il software su più
computer Passo successivo: SOA
![Page 29: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/29.jpg)
Service oriented architecture (SOA)
Servizio: - Meccanismo formale di invocazione - Utilizzo remoto attraverso una rete
Contratto di servizio: - QoS - SLA (uptime, response time, disponibilità, ...)
![Page 30: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/30.jpg)
Service oriented architecture (SOA)
Diversi approcci per l’individuazione e l’utilizzo di servizi: formali/informali, controllati/flessibili
In ogni caso, i servizi sono maggiormente
indipendenti tra di loro Non imposta come un servizio viene
implementato, purché siano rispettati i termini (ma non viene indicato il carico massimo…).
![Page 31: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/31.jpg)
Service oriented architecture (SOA)
Es: • un settore dell’azienda sviluppa un servizio • pianifica l’uso delle risorse e lo avvia • altri cominciano ad utilizzarlo…
Se il servizio si basa su un’infrastruttura tradizionale ci saranno problemi di capacità… nella migliore delle ipotesi
![Page 32: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/32.jpg)
Service oriented architecture (SOA)
Un governo attento dei servizi minimizza la possibilità che si presenti questo tipo ti problemi.
Tuttavia…. La scalabilità di un’applicazione è influenzata
dalla scalabilità dell’infrastruttura sulla quale funziona
![Page 33: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/33.jpg)
Service oriented architecture (SOA)
SOA si presta ad essere utilizzata su una infrastruttura cloud based
Le applicazioni cloud si prestano ad essere
descritte come servizi
![Page 34: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/34.jpg)
Web services e SOA
WS sono solo un particolare aspetto di SOA WS-* : • ecosistema di protocolli • Barriera di ingresso: livello di complessità
![Page 35: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/35.jpg)
Web services e SOA
Web services ReST: • Maggiore indipendenza • Curva di apprendimento migliore • Più largamente adottati:
• Amazon nel 2003 forniva entrambi: 85% utilizzo ReST
![Page 36: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/36.jpg)
WEB 2.0
Larga diffusione dei web services: (Amazon, eBay, Google, Yahoo)
• Scalabilità • Flessibilità / Dinamicità • Accessibilità universale • Possibilità di mescolare contenuti e servizi da varie
fonti • Favorisce la collaborazione
Nuovi modelli di business (es: freemium)
![Page 37: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/37.jpg)
Application servers
• Diffusione e declino (in alcuni settori) di application server eccessivamente ‘pesanti’
• Affermazione di piattaforme che permettono di ignorare i requisiti dell’application server
Platform as a Service
![Page 38: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/38.jpg)
Applicazioni più semplici
Utilizzo diretto web services
![Page 39: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/39.jpg)
Consistenza ‘alla fine’
Maggiore libertà nella gestione dello stato BASE
Basically Available, Soft state, Eventual consistency
vs ACID
atomicity, consistency, isolation, durability
![Page 40: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/40.jpg)
Linguaggi dinamici
Minori tempi di sviluppo per applicazioni semplici
![Page 41: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/41.jpg)
Accesso ai dati
Le applicazioni cloud possono continuare ad
accedere ai database pre-esistenti Scalabilità ?
![Page 42: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/42.jpg)
Fine di mainframe/server/clusters?
NO Integrazione e interazione via servizi
![Page 43: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/43.jpg)
Fine Data centers ?
NO • Gestione cloud private più semplice • Sicurezza, continuità controllo • Latenza • Cultura aziendale
![Page 44: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/44.jpg)
Cloud Computing: architettura
![Page 45: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/45.jpg)
Modello architetturale: obiettivo
Progettare la struttura del sistema utilizzando
dei pattern riusabili in modo da soddisfare le esigenze individuate durante la fase di analisi
![Page 46: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/46.jpg)
Componenti
Modello cloud Modello di distribuzione Architettura cloud
![Page 47: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/47.jpg)
Componenti
Modello cloud: Allineamento di obiettivi strategici e possibili pattern Es1: applicazione CRM fornita come servizio (SaaS)
(CRM=Customer Relationship Management) Es2: migliorare l’utilizzo dei server aziendali utilizzando
un cloud interno (Iaas)
Modello di distribuzione Architettura cloud
![Page 48: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/48.jpg)
Componenti
Modello cloud Modello di distribuzione
Cloud interna/esterna? Cloud privata/pubblica/verticale? Soluzioni ibride? Scelta di servizi da più fornitori?
Architettura cloud
![Page 49: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/49.jpg)
Componenti
Modello cloud Modello di distribuzione Architettura cloud
Quali servizi? Dipendenze tra servizi? Come interagiscono tra loro? Come possono essere utilizzati dall’esterno?
![Page 50: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/50.jpg)
Standard ??
Evoluzione rapida Per alcune parti dell’architettura esistono
standard maturi (es: per SaaS Javascript) per altri solamente standard allo stato di bozza
Importante considerare i rischi di adozione
degli standard…
![Page 51: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/51.jpg)
Quali standard? Quando?
![Page 52: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/52.jpg)
Modello di riferimento
Cloud enablement model Componenti tecnologici di base
Cloud deployment model Distribuzione componenti tecnologici di base
Cloud governance model Gestione del funzionamento,
della sicurezza e dei rischi
Cloud ecosystem model Vista d’insieme, affidabilità
![Page 53: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/53.jpg)
Cloud secondo NIST
![Page 54: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/54.jpg)
Modello logico L’architettura logica del cloud mantiene i medesimi livelli dell’architettura ITC usuale, ma tutti i livelli sono virtuali
![Page 55: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/55.jpg)
Cloud enablement model
Cinque componenti: alla base le infrastrutture fisiche
![Page 56: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/56.jpg)
Cloud enablement model
Livello fisico: Risorse fisiche utilizzate per supportare la virtualizzazione
• Elaborazione • Memorizzazione • Comunicazione • Sicurezza Server, dischi, SAN, switch e router, firewall,….
(omesso nel modello completo)
![Page 57: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/57.jpg)
Cloud enablement model
Livello di virtualizzazione: Virtualizzazione dell’hardware
• Macchine virtuali • Dischi virtuali • Reti private virtuali
![Page 58: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/58.jpg)
Cloud enablement model
Livello del sistema operativo cloud: funzionalità di base
• Bilanciamento del carico • Monitoraggio • Attivazione servizi (provisioning) • Virtualizzazione applicazioni
![Page 59: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/59.jpg)
Cloud enablement model
Virtualizzazione applicazioni
![Page 60: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/60.jpg)
Cloud enablement model
Livello piattaforma: Funzionalità per lo sviluppo di applicazioni, hosting, supporto di contenitori, messaging, gestione code Es: GAE, Amazon Sottolivelli: • middleware • piattaforma
![Page 61: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/61.jpg)
Cloud enablement model
Livello piattaforma / Sottolivello middleware: Strumenti per costruire applicazioni: app server, queue server, messaging, web server… Livello piattaforma / Sottolivello piattaforma: Strumenti pre-integrati
![Page 62: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/62.jpg)
Cloud enablement model
Livello piattaforma
Differenza tra sottolivelli: integrazione (piattaforma ‘chiavi in mano’)
![Page 63: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/63.jpg)
Cloud enablement model
Livello business: Applicazioni e servizi livello utente Es: GMail, DropBox, MemoPal, … Software, Knowledge, Data, …. …..as a Service (*aaS: SaaS, KaaS, DaaS,…)
![Page 64: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/64.jpg)
Cloud deployment model
Internal / private cloud Utilizzo razionale delle risorse Maggiore flessibilità ed elasticità (nei limiti delle risorse disponibili)
![Page 65: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/65.jpg)
Cloud deployment model
External/ public cloud • Terze parti indipendenti (pro? contro?) • Accesso via web. Self-service. • Documentazione, comunità, API caricamento dati,
supporto tecnico • SLA e contratti di servizio • Varietà tipo di virtualizzazione • Varietà risorse disponibili (es: Amazon: elaborazione,
storage, queue server, DB, content delivery, map/reduce)
![Page 66: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/66.jpg)
Cloud deployment model
Hybrid/Integrated cloud Scelte basate (anche) su analisi dei rischi
![Page 67: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/67.jpg)
Utilizzo
![Page 68: Cloud computing: i vantaggi della gestione dati on-demand - T2i... · Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable](https://reader036.vdocuments.site/reader036/viewer/2022063015/5fd2afb01e4e753be01e4d2a/html5/thumbnails/68.jpg)
Utilizzo per categoria utente