NETWORK WORLD NEWSLETTER: MIKE KARP ON STORAGE IN THE ENTERPRISE
09/02/04
Today's focus:  How vendors benefit from Serial Attached SCSI

Dear [EMAIL PROTECTED],

In this issue:

* Serial Attached SCSI squeezes out costs for vendors
* Links related to Storage in the Enterprise
* Featured reader resource
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Today's focus:  How vendors benefit from Serial Attached SCSI

By Mike Karp

Last time we began to look at why vendors are moving us off the 
parallel SCSI interface and onto Serial Attached SCSI, or SAS - 
identifying benefits such as thinner cables and increased signal 
integrity over longer distances. Today let's look at some of the 
other benefits vendors expect to see.

Even those of us who avoided accounting classes like the plague 
understand that, generally speaking, corporate profitability 
results from making more money than you spend. Not unexpectedly, 
in order to ensure robust profit margins for their products, 
vendors always try to squeeze as much cost out of their 
offerings as they can.

When it comes to hardware, cost reductions result from either 
the commoditization of parts (the more that are made, the 
cheaper the individual components become) or the introduction of 
new and more efficient technologies. Make either of these easy 
for vendors to build into their equipment and they are likely to 
go away happy.

These are going to be good days indeed for vendors, because 
serial SCSI offers them a terrific opportunity to take advantage 
of both of these efficiency enablers, commoditized parts and 
innovative technology. This occurs because SAS and serial ATA 
devices use identical command sets (SATA uses a subset of the 
SCSI commands) and both types of devices can plug into the SAS 
connector. This means that when vendors design a backplane for 
SAS devices, they are at the same time designing an environment 
that will also work with SATA. Savings number one then, results 
from the fact that when they design a backplane or midplane, 
they get a "two-fer," a design that can be implemented in 
products that address high-performance (SAS) and low-priced 
(SATA) market segments.

SAS-SATA compatibility results from some cooperation between the 
SAS and ATA communities, and from the SATA group's settling on 
the well-proven SCSI command set.

What made this a relatively safe bet for both groups as they 
moved to the new serial implementations of their products is 
that serial connectivity is in every sense an evolutionary 
change rather than an abrupt shift in their product roadmaps. 
Thus, both groups get to execute on their new strategies while 
taking on relatively little risk.

As more of these boxes are built to the SAS specification, the 
use of the cheaper SATA drives very likely will begin to drive 
the vendors' costs down, increasing their profitability. Whether 
this will translate into savings for IT buyers of course will be 
answered by whatever competitive pressures are driving the 
market at the time.

We still should look at what values the IT buyer can expect from 
this and, in connection with that, we should look at what SAS 
will deliver when compared to Fibre Channel. More on that next 
time.

RELATED EDITORIAL LINKS

SCSI: Past, present and future
Network World Storage in the Enterprise Newsletter, 02/03/04
http://www.nwfusion.com/newsletters/stor/2004/0202stor1.html

Hitachi to unveil high-end storage array
Network World, 08/30/04
http://www.nwfusion.com/news/2004/083004hitachi.html
_______________________________________________________________
To contact: Mike Karp

Mike Karp is senior analyst with Enterprise Management 
Associates, focusing on storage, storage management and the 
methodology that brings these issues into the marketplace. He 
has spent more than 20 years in storage, systems management and 
telecommunications. Mike can be reached via e-mail 
<mailto:[EMAIL PROTECTED]>.
_______________________________________________________________
This newsletter is sponsored by Oracle 
An Economist Intelligence Unit White Paper: From Grid to Great? 

Grid computing is breaking out. Familiar mostly to academics, 
government groups, and scientific researchers, this technology 
that links together the power of diverse computers to create 
powerful, fast and flexible systems is beginning to catch on in 
the corporate world.   Included in this white paper, results and 
interviews from a global survey among Sr Executives, click to 
download now  
http://www.fattail.com/redir/redirect.asp?CID=78718
_______________________________________________________________
ARCHIVE LINKS

Archive of the Storage newsletter:  
http://www.nwfusion.com/newsletters/stor/index.html

Breaking storage news and analysis:
http://www.nwfusion.com/topics/storage.html
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FEATURED READER RESOURCE
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of white papers by Date and Vendor, view white papers by 
TECHNCIAL CATEGORY, mouse over white paper descriptions and take 
advantage of our IMPROVED white paper search engine. CLICK HERE:
<http://www.nwfusion.com/vendorview/whitepapers.html>
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