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Storage Area NetworkSAN

Team Members: Lee Kwok Chiu, AlbertTan Kin Hon, Terence

Wong Siu Por, Paul

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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

NPort

NPort Switch

Point to Point

NPort

NPort

Nport

NPort

NLPort

NLPort

NLPort

NLPort

Loop

F Port

F Port

F Port

F Port

FL Port

NLPort

NLPort

Hub

Fabric

E Port E PortSwitch

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Storage Area Network (SAN)

IBM SUN

EMC

FC-AL Hub

HP

SCSI

HP Arrays & JBOD’s TapeLibraries

Non-HP

LinuxHP-UX NT

ServersHBA: JNI, Qlogic, etcOS: Solaris, AIX, NT, etc

Switches

Storage Arrays

Tapes Libray

ApplicationOmniback, NetbackupOracle, SybaseSAN Mgr LM/DM

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A san configuration

= Fibre Channel

Legend

San Switches

NT Server

IBM: AIX

HPUX servers

SUN:solaris

Linux servers

SAN switchesStorage

array

San switches

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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

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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)

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Switch Management-using web browsing or telnet

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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 ClientsStorage

LANSANSANManager

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

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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

Storageswitches

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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

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San Solutions:Clustering (cont’d)T-Class

V-Class V-Class

Brocade 2800

High End Array e.g. XP 512

= SCSI= Fibre Channel

Legend

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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 !

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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

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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.

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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

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SAN Security- ZoningStorage Area network devices arranged into specified

logical groups.

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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.

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SAN Security- Zoning example (with ISL trunking)

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SAN(storage area network) & NAS (network attached storage)

Clients Network

AttachedStorage

Network Printers

LAN

ApplicationServers

DatabaseServers

File &Print

Servers

High-endStorageArrays

Mid-rangeArrays &

JBOD

SecondaryStorage

(DLTs, etc.)

SAN

Fibre Channel

Traditional Servers

w/ attached Storage

Fibre ChannelSwitches, Hubs, etc.

Fibre ChannelSwitches, Hubs, etc.

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SAN &NAS (cont’d)SAN Nas

Protocol a)Fibre Channelb)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

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Thank You !!

Questions if any ?