Storage Area Network SAN Team Members Lee Kwok

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 P 1 Fabric Point to Point N Port F Port Switch E Port F Port NL Port N port P 2 P 3 PORTS Loop N Port NL Port FL Port Hub Switch E Port F Port NL Port 2

Storage Area Network (SAN) HP-UX NT Linux IBM SUN HP RSwitches FC-AL Hub Non-HP RStorage Arrays SCSI HP Arrays & JBOD’s EMC RServers RHBA: JNI, Qlogic, etc ROS: Solaris, AIX, NT, etc Tape Libraries RTapes Libray RApplication ROmniback, Netbackup ROracle, Sybase RSAN 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 l Server systems ¡ l Storages Device ¡ l Brocade, Mac-data, Cisco Backup devices ¡ l EMC(Clarion), HDS(9900), IBM(shark), HP(xp 1024) Fibre Channel Switches, hubs ¡ l IBM(RS 6000), SUN(E 10000), HP(superdome), DELL) tape library (Storage Tech ) Management & backup software ¡ Veritas backup, HP openview, Legato, CA unicenter 5

San Switches Silk. Worm 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 Silk. Worm 2800 (16 ports) Management - telnet & web browsing -12000: no single point of failure Silk. Worm 12000 (128 port core switches) 6

Switch Management -using web browsing or telnet 7

Why SAN & SAN switches ? l High Speed SAN Manager Using of Fibre channel switching technology. Full duplex bandwidth: 1 Gb/s, 2 Gb/s, 8 Gb/s using Trunking ¡ ¡ l Workstations Cost effective ¡ ¡ ¡ Storage resource share Data is readily across the enterprise Improved Return on Investment (ROI) Centralized management High expandability, high scalability SAN Storage l 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 l Traditional network with each server attached its tape library. l Usingle SAN tape library for backup. l Backup is centralized and effective. l Online data copies & snapshot, and server downtime is minimized. switches Storage Tape library 9

San Solutions: Clustering Redundant path available to storage device. l No single point of failure. l Non-disruptive maintenance and upgrade. l l 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 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) l High Data & system availability is extremely important ! l Non-stop ! l 12

SAN Solution: Business continuity and disaster Recovery (cont. d) l ATM Mirror site set up using extended fabric (120 KM), using: ¡ ¡ l 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. 13

ISL Trunking: ¡ ¡ What is ISL? l ISL is link between 2 san switches, so call inter switching links. l What is ISL Trunking? l l ¡ Advantages: l Combine 4 pyhsical ISLs into one single logical links. l l High bandwidth (8 Gb/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. l Use in between core switch in large scale SAN. 14

ISL Trunking: l. Throughput of ISL no (trunking)=(1+1. 5+0. 5+1+1)Gb/s = 5 Gb/s of ISL trunking =(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) l What is san zoning? Fabric-connected devices arranged into specified logical groups, devices can be members of multiple zone. l l 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, win 2000, Linux. ¡ Ease of monitoring: 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. l l ¡ 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 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