NETWORKING

  • 05/20/2005
    4:00 AM
  • Network Computing
  • News
  • Connect Directly
  • Rating: 
    0 votes
    +
    Vote up!
    -
    Vote down!

Distributed Storage: Extending the SAN Over the WAN

Whether you're connecting remote users to a single storage facility or forcing data backups to a central site in a distributed storage environment, you need a strong SAN-over-WAN implementation.
The three basic SAN-over-WAN protocols in widespread use on IP networks are based on the SCSI and Fibre Channel SAN protocols and depend on TCP:

• iSCSI (Internet SCSI) encapsulates the standard SCSI-3 device interface commands in a TCP/IP data flow for transport over the WAN.

• FCIP (Fibre Channel over TCP/IP) encapsulates standard Fibre Channel packets in a TCP/IP data flow. Alternatives can encapsulate Fibre Channel over ATM or other link transports.


Waiting for Acknowledgment
Click to Enlarge

• iFCP (Internet Fibre Channel Protocol) intercepts Fibre Channel packets and spoofs them, replacing them with TCP sessions for transport across IP.


We welcome your comments on this topic on our social media channels, or [contact us directly] with questions about the site.

Log in or Register to post comments