文档介绍：A Foundation for Understanding Storage works
SAN 101
Special thanks to our SAN 101 sponsors whose support helped bring you this course:
17 August 1999
1
Objectives
This training prepares students to:
Use and understand basic SAN terminology
Distinguish SAN from NAS and other work technologies
Understand where SANs can help users the most
Describe the configuration of SANs in the point-to-point, arbitrated loop, and switched fabric topologies
Cite the performance gains available through use of SAN technology
Recognize the distinguishing features of the main SAN products in today’s market
17 August 1999
2
Agenda
Introduction to SANs
SAN connectivity
ponents
SAN applications
Basic terms and concepts
Advantages of SANs
SAN and NAS
“A Fibre Channel Primer”
Products and features
High-performance backup
Storage consolidation/expansion
Disaster protection
17 August 1999
3
What is a Storage work?
A work for servers and storage systems
SAN
LAN
17 August 1999
4
Why Give Storage Its work?
A good LAN does not make a good SAN !
LANs use different protocols, different tools
LANs are physically insecure at the desktop and potentially vulnerable at the server
LANs seldom have spare capacity for working
LANs are tuned to favor short, “bursty” user transmissions vs large, continuous data transfers
SAN Storage
RAID: “Redundant Array of Inexpensive Disks”
Fault-tolerant grouping of disks that server sees as a single disk bination of parity-checking, mirroring, striping
Self-contained, manageable unit of storage
JBOD: “Just a Bunch of Disks”
Drives independently attached to the I/O channel
Scaleable, but requires server to manage multiple volumes
Do not provide protection in case of drive failure
17 August 1999
6
ponents
Servers with host bus adapters
Storage systems
RAID
JBOD
Tape
Optical
Hubs and switches
Bridges and extenders
SAN management software
17 August 1999
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Promise of SAN
Massively extended scalability
Greatly enhanced device c