STORAGE AREA NETWORKING PROTOCOLS AND ARCHITECTURE

275 Pages·2004·5.69 MB·English

STORAGE AREA NETWORKING
PROTOCOLS AND ARCHITECTURE
SESSION OPT-2T01
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Morning Schedule
• 9:00am–10:30am Introduction to Storage Area Networking
Storage Terms and Acronyms
Storage Networking Devices (Switches, HBAs, Disk)
Storage Networking Applications
Storage Networking Topologies
Intro to Storage Protocols (SCSI, FC, FCIP, iSCSI)
• 10:30am–10:45am Break
• 10:50am–12:30pm Storage Protocols in-depth
Introduction to the Standards
SCSI
Fibre Channel
• 12:30pm–1:30pm Lunch
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Afternoon Schedule
• 1:45pm–3:30pm Storage Protocols In-Depth (Cont.)
Fibre Channel Services
iSCSI
FCIP
iFCP
iSNS and SLP
• 3:30pm–3:45pm Break
• 3:50pm–6:00pm Storage Network Troubleshooting
Required Tools
Required Technical Skill Sets
Storage Network Architecture
Design Practices
FC Network Designs
IP SANs
SAN Extension
Implementation and Management
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Associated Sessions
• OPT-1051 Introduction to Storage Topologies
and Applications
• OPT-2051 Fibre Channel Storage Area Network Design
• OPT-2052 FCIP Design and Implementation
• OPT-2053 iSCSI Design and Implementation
• OPT-2054 Storage Networking Security
• OPT-3051 Troubleshooting MDS9000 Fibre Channel SAN
• OPT-3052 Troubleshooting MDS9000 IP Storage
Area SAN
• OPT-4051 Design and Architecture of Storage
Networking Platforms
• OPT-4052 Case Study: Cisco IT Storage Strategy
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Reference Materials
• Cisco Storage Networking
www.cisco.com/go/storagenetworking
• Cisco AVVID Storage Networking Partner Program
www.cisco.com/go/partners
• Cisco Metro Optical Product Information
www.cisco.com/go/comet
• Storage Network Industry Association (SNIA)
www.snia.org
• IETF—IP Storage
www.ietf.org/html.charters/ips-charter.html
• ANSI T11—Fibre Channel
www.t11.org/index.htm
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INTRODUCTION TO STORAGE
AREA NETWORKING
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Section Agenda
• Storage Terms and Acronyms
• Storage Networking Devices
• Storage Networking Applications
• Storage Networking Topologies
• Introduction to Storage Protocols
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STORAGE TERMS
AND ACRONYMS
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Technologies Overview
(or “Storage in a Nutshell”)
Storage Area Servers and
Network (SAN) Mainframes Support
Technologies ProStAocNols Databases BAapckpusp CLIOPUD Call Home Center
SAN
Applications iSCSI RAID &
VirtualRAID
JBODs Storage
and NAS Virtualization Mirroring
iSCSI Drivers FSPF MEamnabgeedmdeednt FC Virtual SAN
HA
IP TAPE FibErneh Canhcaendnel
CLOUD
iSCSI
FCIP
Generic
Fibre Channel
IP
SAN
CLOUD
FC Switch FC Switch
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Introduction to SAN Terminology
• Block Level I/O
• File Level I/O
• SCSI—Small Computer Systems Interface
• FC—Fibre Channel
• RAID—Redundant Array of Inexpensive Disks
• iSCSI—Internet SCSI
• FCIP—Fibre Channel over TCP/IP
• iFCP—Internet Fibre Channel Protocol
• iSNS—Internet Storage Name Service
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RAID Levels
RAID Level Description Min Disks
0 Striping/Concatenation 2
1 Mirror 2
0+1 Striping/Concatenation then Mirror 4
1+0 Mirror then Striping/Concatenation 4
2 Hamming Code N/A
3 Fix parity with concert I/O N/A
4 Fix parity with Random I/O N/A
5 Stripe with distributed parity with Random 3 without log 4
I/O with log
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Terminology
Direct Attached Storage (DAS)
• Block level I/O
• Can be internal or external
• Typically SCSI or FC
• Limited scalability
• High cost due to management
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Terminology
Network Attached Storage (NAS)
• File level I/O
• Used for file sharing
applications
• IP-based IP
• Deployed over existing
low-cost Ethernet networks
• Redundant links NAS NAS NAS
• Scalable
• Multiple servers can share
same file system
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Terminology
Storage Area Network (SAN)
• Block level I/O
• Deployed as separate
network
• Servers share storage
subsystem
• Scalable
• Multiple paths for high
availability
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STORAGE
NETWORKING DEVICES
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SAN Components
Host Bus Adapter (HBA)
• Interface between host and storage
• Supports copper or optical
• Typically one port; Can be multiple ports
• 1Gb, 2Gb and 4Gb
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SAN Components
Fabric Switch
• 1Gb, 2Gb, and 4Gb
• 8-40 ports
• Low latency
• Can be copper or optical
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SAN Components
Director Class Switch
• 1Gb, 2Gb, 4Gb and 10Gb
• FC and FICON
• 256 ports and growing
• Low latency
• Can be copper
or optical
• Multi-service
platforms
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SAN Components
JBOD
• Just a bunch of disks
• Limited scalability
• Typically 2 FC ports
• SCSI or FC disks
• Basic controllers
• No caches
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SAN Components
Storage Arrays
• 36GB to many TB
• Typically 2 to many interfaces
• Subsystems may mix interfaces
• ESCON/FICON, SCSI, FC, or iSCSI
• SCSI or FC disks iSCSI
• Intelligent controllers
• Large caches
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