I think that this is too true. Two observations support this:

1) The growing market for Solid State Disk (SSD) prior to the 3880-13 - HDS,
EMC and STK (Amdahl?) were all shipping these boxes, and AFAIK at enormous
margins.

2) The quick decline in SSD sales after the 3880-13, followed by a fatal
blow with the introduction of the 3990-3 (and PCM equivalents).

Ron

> 
> the other view is that caches were required because careful
> positioning was no longer sufficient.
> 

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