Finally, is NAS with ATA/133 drives going to give us the performance we need or is SCSI still the better option?
The performance of different NAS devices ranges greatly and those that have TCP/IP accelerators or where the accelerators are installed in the accessing servers is a big factor. The network is usually the limiting factor. You need to know your requirements and then try and determine if the NAS device will meet them. The best thing is if you can get a performance guarantee from the vendor.
The disk drives used are somewhat of a performance difference but a small factor compared to the network issues. Lump it in with the earlier answer.
Evaluator Group, Inc.
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This was first published in April 2003