From Building SANs with Brocade Fabric Switches

This Appendix will provide you with a quick, yet comprehensive, review of the most important concepts covered in this book.

Chapter 1: Introduction to SANs

Overview of SANs

  • SAN technology evolved from direct-attach interconnects like Small Computer Systems Interface (SCSI).

  • Fibre Channel supports SCSI, Internet Protocol (IP), and the Fibre Channel Virtual Interface (FC-VI) Protocol.

  • The distance between Fibre Channel nodes can be as much as 10 km.

  • Fibre Channel supports copper, multimode optical, and single-mode optical media.

  • SAN technology has moved from Fibre Channel Arbitrated Loop to full Fibre Channel switch fabric.

Taming the Storage Monster

  • Data storage needs are increasing rapidly.

  • Requirements due to databases, e-mail, multimedia, and the Internet have dramatically increased the required amount of storage for data.

  • Disk farms, storage arrays, and storage consolidation are the keys to solving the storage problem.

Benefits of Building a SAN

  • Fibre Channel is ideal for supporting high-availability configurations and business-critical back-end operations, due to the ability to set up redundant networks and clusters.

  • SAN technology allows for storage consolidation and data pooling for more efficient use of storage resources.

  • Backup windows are shrinking, and backup traffic on the LAN can be easily reduced by using a SAN to reduce network congestion due to backup.

  • Block-level, high-speed access through SCSI-Fibre Channel Protocol (FCP) can accelerate data access between storage and hosts, and can free up host resources that would be occupied serving files and data through IP.

  • Cluster protocol access through FC-VI frees up CPU cycles in hosts and...

Products & Services
Fibre Channel Products
Fibre Channel products include hubs, directors, servers, adapters, etc.
AdvancedMC Products
AdvancedMC products are mezzanine cards (MC) that use a bus specification from the PCI Manufacturers Group (PICMG) for the telecom industry. AdvancedMC products offer advanced telecom features and hot-swap capabilities.
Fiber Channel Connectors
Fiber Channel connectors are high-speed connectors used in Fiber Channel systems.
RAID Products
RAID products include component within a RAID system, such as RAID controllers and RAID disk arrays. RAID is an acronym for redundant array of independent (or inexpensive) disks.
SCSI Adapters and SCSI Controllers
SCSI adapters and SCSI controllers (SCSI cards) are computer interface cards that are installed in an expansion slot. They are used to connect the SCSI system to several devices and peripherals using a daisy chain method.

Topics of Interest

Solutions in this chapter: The Architecture of SANs Fibre Channel Protocol Basics Classes of Service Storage Network Topologies Fabric Services Summary Solutions Fast Track Frequently Asked...

Solutions in this chapter: Overview of SANs Taming the Storage Monster Benefits of Building a SAN When to Deploy a SAN Steps to a Successful SAN Deployment Summary Solutions Fast Track...

Connecting Legacy Devices into Your SAN When Fibre Channel networks were first put into operation, many storage devices were not able to natively communicate using the Fibre Channel protocol.

How Does a SAN Differ from a LAN or WAN? A LAN uses network protocols that send smaller amounts of data with increased communication overhead, reducing bandwidth. A SAN uses storage protocols ( Small...

Fibre Channel for SANs With many timesaving illustrations and practical suggestions for troubleshooting, this book shows you how Fibre Channel works, how it integrates with other protocols and...