15 SAN extension
SAN extension enables you to implement disaster-tolerant storage solutions over long distances and
multiple sites.
This chapter describes the following topics:
• SAN extension overview
, page 279
• Fibre Channel long-distance technology
, page 282
• Multi-protocol long-distance technology
, page 290
• HP multi-protocol long-distance products
, page 298
• HP storage replication products
, page 323
• Certified third-party WDM, iFCP, and SONET products
, page 352
SAN extension overview
A SAN extension is an extended ISL connection between switches, typically linking two sites. An
extended ISL is considered to be:
•
Any distance greater than:
• 50 m for 8 Gb/s Fibre Channel
• 150 m for 4 Gb/s Fibre Channel
• 300 m for 2 Gb/s Fibre Channel
• 500 m for 1 Gb/s Fibre Channel
•
Any distance between a pair of WDM, FCIP, or FC-SONET products
NOTE:
Fibre Channel distances listed here assume the use of type OM2 fiber optic cable. For the supported
distances for each Fibre Channel speed and interconnect type, see
“
SAN fabric connectivity rules
” on page 167.
SAN Design Reference Guide
279
Содержание StorageWorks 4000/6000/8000 - Enterprise Virtual Arrays
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