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Storage Area Network SAN Team Members: Lee Kwok Chiu, Albert Tan Kin Hon, Terence Wong Siu Por, Paul 1 Fibre Channel Tutorial • Concept of “Nodes” and “Ports” • Nodes can be Hosts or Devices, the ports are the bus adapters. • Nodes communicate via three possible topologies: Point to point, Loop, and Fabric. NODE P1 Fabric Point to Point N Port N Port N Port F Port Switch E Port F Port NL Port NL Port N port P2 P3 PORTS Loop N Port NL Port F Port FL Port Hub Switch E Port F Port N Port NL Port NL Port NL Port 2 Storage Area Network (SAN) HP-UX NT Linux IBM SUN HP Switches FC-AL Hub Non-HP Storage Arrays SCSI HP Arrays & JBOD’s EMC Servers HBA: JNI, Qlogic, etc OS: Solaris, AIX, NT, etc Tape Libraries Tapes Libray Application Omniback, Netbackup Oracle, Sybase SAN Mgr LM/DM 3 A san configuration SUN:solaris IBM: AIX San Switches Storage array SAN switches NT Server Legend HPUX servers = Fibre Channel San switches 4 Linux servers San Components Server systems IBM(RS6000), SUN(E10000), HP(superdome), DELL) Storages Device EMC(Clarion), HDS(9900), IBM(shark), HP(xp1024) Fibre Channel Switches, hubs Brocade, Mac-data, Cisco Backup devices tape library (Storage Tech ) Management & backup software Veritas backup, HP openview, Legato, CA unicenter 5 San Switches SilkWorm 2400 (8 ports) Hardware Features -8 & 16 port Fabric – Switches. -Universal ports (E, F, FL) -1 Gb/s port speeds ( 2 Gb/s now) -Hardware Port Zoning -ISL Trunking -Hot-swappable, redundant cooling fan, power supply SilkWorm 2800 (16 ports) Management - telnet & web browsing -12000: no single point of failure SilkWorm 12000 (128 port core switches) 6 Switch Management -using web browsing or telnet 7 Why SAN & SAN switches ? High Speed Using of Fibre channel switching technology. Full duplex bandwidth: 1Gb/s, 2 Gb/s, 8 Gb/s using Trunking Cost effective Storage resource share Data is readily across the enterprise Improved Return on Investment (ROI) Centralized management High expandability, high scalability Workstations SAN Manager SAN Storage LAN Servers LAN Clients San Solution, the “market trend” !! Server Free backup and restore Clustering Business continuance & Disaster recovery Fulfill business requirement 8 SAN Solution: Server-free back up & Restore Traditional network with each server attached its tape library. Using single SAN tape library for backup. Backup is centralized and effective. switches Storage Online data copies & snapshot, and server downtime is minimized. Tape library 9 San Solutions:Clustering Redundant path available to storage device. No single point of failure. Non-disruptive maintenance and upgrade. Advantages: Quick application dynamic failover is feasible. Transparent to users. 99.9% system availability. Dual switches 10 San Solutions:Clustering (cont’d) T-Class V-Class V-Class Brocade 2800 Legend = SCSI = Fibre Channel High End Array e.g. XP 512 11 SAN Solutions: Business continuity and disaster Recovery Losing Millions of dollars for hourly system outage. (Financial security firms, Stock Exchange) High Data & system availability is extremely important ! Non-stop ! 12 SAN Solution: Business continuity and disaster Recovery (cont.d) Mirror site set up using extended fabric (120 KM), using: ATM DWDM (Dense-Wave Division Multiplexing) Extend wavelength GBIC SFP (small form Factor Pluggable interfaces) Using existing WAN Technology like ATM for long distance. DWDM Business operation resume within a short time during disaster. 13 ISL Trunking: Advantages: What is ISL? ISL is link between 2 san switches, so call inter switching links. What is ISL Trunking? Combine 4 pyhsical ISLs into one single logical links. High bandwidth (8Gb/s) Load sharing In order frame delivery Link redundancy on need for re-routing if one link failure Simpler management • Only one logical link between 2 switches. Use in between core switch in large scale SAN. 14 ISL Trunking: Throughput of ISL no (trunking)=(1+1.5+0.5+1+1)Gb/s = 5 Gb/s Throughput of ISL trunking =(1.5+1.5+0.5+1+2)Gb/s = 7 Gb/s 15 SAN Security- Zoning Storage Area network devices arranged into specified logical groups. 16 SAN Security- Zoning(cont’d) What is san zoning? Fabric-connected devices arranged into specified logical groups, devices can be members of multiple zone. Types zoning: Port Zoning – base on switch port (domain ID, number) WWN Zoning– base on fibre channel card’s World wide name which is similar to Mac address of Ethernet card. Advantages of zoning: Partition storage area networks into logical groupings of devices. Flexible: device can be member of more than one zone, like tape library. Controlled access: barrier between different operating environment – AIX, Solaris, hpux, win2000, Linux. Ease of monitoring: Can telnet into san switches Using web browser. Mixed Zoning – base on port & WWN. 17 SAN Security- Zoning example (with ISL trunking) 18 SAN(storage area network) & NAS (network attached storage) Clients Network Attached Storage Network Printers Traditional Servers w/ attached Storage LAN Application Servers Database Servers File & Print Servers Fibre Channel Fibre Channel Switches, Hubs, etc. High-end Storage Arrays Mid-range Arrays & JBOD SAN Secondary Storage (DLTs, etc.) 19 SAN &NAS (cont’d) SAN Nas Protocol a)Fibre Channel b)Fibre Channel Scsi TCP/IP Applications -Mission-critical transactionbased database application -High Availability -Backup & Restore -Business Continuance -Storage Consolidation -Server Consolidation -Limited read only data base access -Large, heterogeneous - Simpilied addition of files sharing capacity Advantages block data transfer -Data transfer reliability -Reduces LAN traffic -Configuration flexibility -High Performance -High Scalability -Centralized Management -Multiple Vendor offerings -Resilience to failure -File Sharing in NFS and CIFS -Small-block of data transfer over long distances - Easy deployment and maintenance - Best for low-volume file sharing between multiple peer clients which are less sensitive to response times 20 Thank You !! Questions if any ? 21