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Strategies & Market Trends : Gorilla and King Portfolio Candidates

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To: DownSouth who wrote (25168)5/23/2000 7:21:00 AM
From: alankeister  Read Replies (2) of 54805
 
Data served by a NTAP filer through a LAN is faster than data served from an I/O channel like SCSI or FC. The reason being that data delays are not caused by the speed of ethernet, but by the delays of writing and reading that data through a general purpose OS using a general purpose file layout. Delays caused by LAN network contention are easily overcome with fatter pipes, or reduced contention over any given pipe.

I have used NetApp Filers at work and like them very much. However, your statement is misleading. They may be able to serve small amounts of data faster than local disk but with any volume, local disk is magnitudes faster. Unfortunately, it is not as easy as you claim to overcome network bandwith limitations with fatter pipes or by reducing contention. Last I heard, the Filers support only one network interface so there is a hard limit on transfer rates that can be exceeded by one busy client. Fast Ethernet and FDDI are the only tried and true fast networks available and you can get only 10 Megabytes/sec through them.

- Alan
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