T1-9-2.ppt
- 1. 1 Storage Area Network SAN Team Members: Lee Kwok Chiu, Albert Tan Kin Hon, Terence Wong Siu Por, Paul
- 2. 2 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. P1 P2 P3 NODE PORTS N Port N Port Switch Point to Point N Port N Port N port N Port NL Port NL Port NL Port NL Port Loop F Port F Port F Port F Port FL Port NL Port NL Port Hub Fabric E Port E Port Switch
- 3. 3 Storage Area Network (SAN) IBM SUN EMC FC-AL Hub HP SCSI HP Arrays & JBOD’s Tape Libraries Non-HP Linux HP-UX NT Servers HBA: JNI, Qlogic, etc OS: Solaris, AIX, NT, etc Switches Storage Arrays Tapes Libray Application Omniback, Netbackup Oracle, Sybase SAN Mgr LM/DM
- 4. 4 A san configuration = Fibre Channel Legend San Switches NT Server IBM: AIX HPUX servers SUN:solaris Linux servers SAN switches Storage array San switches
- 5. 5 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
- 6. 6 San Switches SilkWorm 2400 (8 ports) SilkWorm 2800 (16 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 Management - telnet & web browsing -12000: no single point of failure SilkWorm 12000 (128 port core switches)
- 7. 7 Switch Management -using web browsing or telnet
- 8. 8 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 Servers Workstations LAN Clients Storage LAN SAN SAN Manager Cost effective Storage resource share Data is readily across the enterprise Improved Return on Investment (ROI) Centralized management High expandability, high scalability San Solution, the “market trend” !! Server Free backup and restore Clustering Business continuance & Disaster recovery Fulfill business requirement
- 9. 9 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. Online data copies & snapshot, and server downtime is minimized. Tape library Storage switches
- 10. 10 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
- 11. 11 San Solutions:Clustering (cont’d) T-Class V-Class V-Class Brocade 2800 High End Array e.g. XP 512 = SCSI = Fibre Channel Legend
- 12. 12 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 !
- 13. 13 SAN Solution: Business continuity and disaster Recovery (cont.d) Mirror site set up using extended fabric (120 KM), using: DWDM (Dense-Wave Division Multiplexing) Extend wavelength GBIC SFP (small form Factor Pluggable interfaces) Using existing WAN Technology like ATM for long distance. Business operation resume within a short time during disaster. ATM DWDM
- 14. 14 ISL Trunking: 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. Advantages: 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.
- 15. 15 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
- 16. 16 SAN Security- Zoning Storage Area network devices arranged into specified logical groups.
- 17. 17 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. Mixed Zoning – base on port & WWN. 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.
- 18. 18 SAN Security- Zoning example (with ISL trunking)
- 19. 19 SAN(storage area network) & NAS (network attached storage) Clients Network Attached Storage Network Printers LAN Application Servers Database Servers File & Print Servers High-end Storage Arrays Mid-range Arrays & JBOD Secondary Storage (DLTs, etc.) SAN Fibre Channel Traditional Servers w/ attached Storage Fibre Channel Switches, Hubs, etc.
- 20. 20 SAN &NAS (cont’d) SAN Nas Protocol a)Fibre Channel b)Fibre Channel Scsi TCP/IP Applications -Mission-critical transaction- based database application -High Availability -Backup & Restore -Business Continuance -Storage Consolidation -Server Consolidation -Limited read only data base access -File Sharing in NFS and CIFS -Small-block of data transfer over long distances Advantages -Large, heterogeneous block data transfer -Data transfer reliability -Reduces LAN traffic -Configuration flexibility -High Performance -High Scalability -Centralized Management -Multiple Vendor offerings -Resilience to failure - Simpilied addition of files sharing capacity - Easy deployment and maintenance - Best for low-volume file sharing between multiple peer clients which are less sensitive to response times
- 21. 21 Thank You !! Questions if any ?