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Technology Stocks : Novell (NOVL) dirt cheap, good buy?
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To: David A. Lethe who wrote (18230)11/1/1997 7:56:00 PM
From: Scott C. Lemon   of 42771
 
Hello David,

Sorry for the delayed response ... I took a couple of days off work to get some work done! ;-)

I appreciate the detailed response ... I have to again complement you on your choice of disk interface ... SSA is amazing stuff!

You stated:

> Since I20 will enable a CPU to offload some processing power to the
> disk subsystem then I contend that an NT-based system will recover
> MORE CPU cycles than a Netware server.

I would agree with this ... NT probably *will* recover more CPU cycles, (because it has some many that *need* to be recovered) however NetWare will have the "burden" of the bus removed from it, along with being able to delegate even more device specific tasks to the I2O adapter.

You also stated:

> On analysis, the reason turned out to be that most MPE systems
> weren't as I/O bound as we thought. Their disk drivers were so
> efficient that they just didn't see the benefit that we thought
> they would.

So what you are saying is that if *our* research shows that NetWare *is* as I/O bound as we know, then we *do* stand to benefit as much, or more, than we think ... is that correct? ;-)

> This is also not just my research. EMC disk subsystems exhibit the
> same performance drop between these two operating systems. Granted
> every architecture and O/S is different, but don't make the
> generalization that I20 will benefit one OS over another!

I don't argue your logic or research, in fact I believe that it just reinforces what we expect to see with NetWare ... that's why we *like* I2O so much ... ;-)

Scott C. Lemon
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