A Quick Guide to iSCSI on Linux

by Ben Rockwood.

Cuddletech TekRef Series

More and more it appears that iSCSI isn't going away, but might just be here to stay for awhile. In a nutshell, iSCSI is simply the pairing of the "best" of both NAS (using NFS or CIFSs over IP Ethernet networks) and SAN (Fibre Channel Fabrics) technologies. What you ultimately get is a protocol that allows you to use SCSI commands like Fibre Channels FCP, yet does it over an IP network instead of a costly Fibre Channel Fabric. Instead of buying an expensive Brocade or McData switch and costly Fibre Channel HBAs from companies like JNI, Adaptec and Emulex, you can use any IP switch (NetGear, 3Com, Extreme, Foundry, etc) and normal Ethernet cards. Because SCSI is CPU intensive during high I/O loads iSCSI Host Bus Adapters (HBA) have arrived which act just like a FC HBA except that it uses Ethernet instead of FC Fabric; the idea being that the SCSI requests are offloaded from your primary CPU onto the ASIC on your iSCSI HBA. [via]

http://www.cuddletech.com/articles/iscsi/iscs...

Download File

PDF Finder

A Quick Guide to iSCSI on Linux (2004)

Related Files

Rate this Document

Popular eBooks

ADS

Tag Clouds

Last Download

BookShelf