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Vol. 1 No. 6 August 2002

Where in the world is iSCSI?

It's cheap, it's centralized and it lets you network via Ethernet. So why isn't everyone using it? You've heard the term. You might even know what it means. iSCSI is one of the most hyped storage technologies in years, yet where is it in real life? I don't see it - and that bums me out - seeing as I was one of the early touters of the concept. I'd like to use this article to tell you what's happening, why it's relevant, why no one does it yet and what's going to have to happen for iSCSI to become relevant. First, iSCSI is block data over TCP/IP (Ethernet, baby). Your computer talks SCSI to its disk drive, be it over a SCSI bus or a Fibre Channel (FC) bus (which is SCSI over FC). If you want to network your storage - and for the love of God you really ought to at least want to network your storage today - you either network for files via Ethernet (NAS) or for blocks via FC (SAN). iSCSI lets you network via Ethernet for blocks. But why should anyone care? Because 90% of the data storage in the world isn't FC enabled, but 100% of ...

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Features in this issue


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Columns in this issue