Data Center Architecture
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1 Data Center Architecture Mario Baldi Politecnico di Torino (Technical University of Turin) Computer Engineering Department
2 reti_aziendali_ced - 2 Copyright notice This set of transparencies, hereinafter referred to as slides, is protected by copyright laws and provisions of International Treaties. The title and copyright regarding the slides (including, but not limited to, each and every image, photography, animation, video, audio, music and text) are property of the authors specified on page 1. The slides may be reproduced and used freely by research institutes, schools and Universities for non-profit, institutional purposes. In such cases, no authorization is requested. Any total or partial use or reproduction (including, but not limited to, reproduction on magnetic media, computer networks, and printed reproduction) is forbidden, unless explicitly authorized by the authors by means of written license. Information included in these slides is deemed as accurate at the date of publication. Such information is supplied for merely educational purposes and may not be used in designing systems, products, networks, etc. In any case, these slides are subject to changes without any previous notice. The authors do not assume any responsibility for the contents of these slides (including, but not limited to, accuracy, completeness, enforceability, updated-ness of information hereinafter provided). In any case, accordance with information hereinafter included must not be declared. In any case, this copyright notice must never be removed and must be reported even in partial uses.
3 Multi-tier applications Web Server Application server Data base server Web Server Java servlet Enterprise Java Bean Data base server Web Server Application server Mainframe reti_aziendali_ced - 3
4 Load Balancing Web Server Application server Server load balancer reti_aziendali_ced - 4
5 Load Balancing and Multi-Tier applications Tier-2 server sharing Web Server Application server Server load balancer reti_aziendali_ced - 5
6 Load Balancing and Multi-Tier applications Load balancing on Tier-2 servers (not recommended) Web Server Application server Server load balancer reti_aziendali_ced - 6
7 Load Balancing and Multi-Tier applications Application server Server load balancer Capable of assembling web pages reti_aziendali_ced - 7
8 Storage Area Network (SAN) iscsi SAN Fiber Channel FCIP SCSI reti_aziendali_ced - 8
9 Public network access Internet External Firewall DNS Public servers WWW Mail HTTP proxy FTP proxy De-Militarized Zone (DMZ) Public Intranet Public Front-end Internal Firewall Private Intranet reti_aziendali_ced - 9
10 Public network access Internet External Firewall DNS Public Servers WWW Mail HTTP proxy FTP proxy De-Militarized Zone (DMZ) Public Intranet Public front-end Private Server accessed only from the inside Internal Firewall Private Intranet Back end Private Servers accessed from public servers reti_aziendali_ced - 10
11 Security and load balance Internet or other public network External Firewall Unbalanced pubblic Front-end Rete aziendale (privata) Physical servers Back-end Application Server Load balancer SAN Physical servers Internal Firewall Private Front-end Balanced pubblic Front-end Database Server Layer 2 or layer 3 network reti_aziendali_ced - 11
12 Addressing Private addressing can be used A proxy is used to make hosts access external netwroks Static NAT to access servers Services publication Implemented by an external firewall reti_aziendali_ced - 12
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