1. Amin Kazempour Long 20079980 Yunyan XU 20067690
STORAGE AREA NETWORKS
Amin Kazempour Long
Yunyan XU
CSIT 5600 PROJECT

2. Agenda Storages types SAN SAN Components SAN Benefits & Applications
SAN Technologies
SAN Hardware
SAN Software and Some Protocols
Q & A?!

3. Storages in terms of Sharing
DAS (Direct Attached Storage)
Blocks of Storage
Only belongs to one end system..
Example: Physical Hard Disk
NAS (Network Attached Storage)
File Sharing
Files are shared between several nodes
Example: NFS (Network File System)
SAN (Storage Area Network)
Block Storage Sharing
Example: iSCSI, FC,…

4. SAN Definition
SAN is a dedicated network that provides access to consolidated, block level data storage.
Topology

5. Components:
1)Server: file & print server, server, database server; connect to SAN by adaptors;
2)SAN infrastructure: Adaptors and Switches;
3)Disk Storage: disk(or RAID)arrays;
4)Tape storage: any disk storage can be connected to a tape library via the channel, for bake up and restore.
5)Management software: configure and monitor.

6. Main Devices SAN Server with disk arrays (EMC Clariion)
SAN Switch (HP)

7. Benefits Centralizing data storage operations (extension, backup)
Efficient on data transfer
Dramatically reduce the management costs
Reduce complexity of environments
Common technology
Interoperability
Large amount of users

8. Applications ISPs, Banks(core part--FC SAN, other parts--IP SAN)
Commercial solutions & products
Hardware—EMC(33%) platform Symmetrix, ESN management software
IBM—server(MSS2106), storage(ESS), connection(FC switch), management software(Tivoli) and service
HP—Equation storage framework
Sun—Sun StorEdge T3+Sun Stor Edge internet FC switch
Brocade—Intelligent Fabric Service-Oriented Architecture

9. SAN Two Main Technologies
SAN can be implemented in two different networks:
iSCSI (TCP/IP)
FiberChannel

10. iSCSI (TCP/IP) VS FiberChannel
Description
FC-SAN
IP-SAN
Rate
1GB, 2GB, 4GB, 8GB, 16GB
1GB, 10GB (Expensive)
Architecture
Fiber network, HBA card
Use IP network (TCP/IP), NIC
Transfer distance
Limited by fiber transfer
Theoretically no limitation (More flexible)
Management & maintain
Technology and management are complex
Easy as IP network device
Compatible
Weak compatibility with other FC-SANs
Compatible with other IP-SANs
Cost
Higher(buy FC-switches, HBA card, library&trainee)
Lower
Anti-disaster (tolerance)
Hardware & software cost a lot
Can resist to local and remote disaster and cost less
Security
Great, as it is isolated from the IP Network
Lower, secondary considerations required for security

11. Hardware—Connections
FC connection
FC HBA
FC Switch
FC Cables
TCP/IP connection
GB NIC
TCP/IP Switch
UTP or other TCP/IP medias

12. Software—Protocols FCoE
FCoE--Fiber Channel over Ethernet
FC strength
TCP/IP flexibility
Cost reducing

13. Software—Protocols FCIP (Back up to Long Distance)
FCIP--Entire Fiber Channel Frame Over IP
Back up data in another city (FC IP)

14. Software – FAST & FAST Cache
FAST Cache Technology
Main memory is the fastest but expensive
Cache the MRU pages in main memory
FAST = Fully Automated Storage Tiering
Brought by EMC SANS
FAST Technology
Fastest Hard Disk due to highest frequency of usage
Hard Disks
Nand (SSD[RAM technology])
SAS--Serial Attached SCSI
SCSI: Small Computer System Interface
SATA
IDE (Obsolete)

15. Software—FAST Technology (EMC Property, Advanced Technology)
Active data goes to the highest performance tier, and inactive data to the lowest-cost, highest- capacity tier.
Fast algorithm Steps:
Statistics Collection
Hot and Cold data slices
Analysis
Rank the slices
Relocation
Relocate the slices to different tires due to their ranks

16. References
EMC Fast VP For Unified Storage Systems, EMC White Paper, October
EMC Fast Cache, EMC White Paper, October 2011.
Pros and cons of Fiber Channel and Ethernet storage, Scott Reevs, March
My First SAN solution guide, HP, April 2004.
What is the difference between SAN, NAS and DAS,

17. THANK YOU
Q & A ?