Appeal No. 2003-0227
Application No. 09/428,871
appellants’ claims directed toward multi-tier data storage,
however, do not merely require a third data storage unit as a
caching unit but, rather, require that if requested data is
unavailable on a first data storage unit, the third data storage
unit caches the data from a second data storage unit which
archives data from the first data storage unit. The examiner
does not explain how Garfinkle and Craig would have led one of
ordinary skill in the art to this system.
The examiner points out that Garfinkle removes the digital
images from the image server after a fixed period of time to free
up disk space for other images, and that Garfinkle prefers
multiple RAID partitions so that the image server can process new
rolls of film when one partition is unavailable due to service or
backup procedures (col. 5, lines 40-52) (answer, pages 6-7). The
examiner concludes from these and the above-discussed disclosures
that “[i]t would have been obvious to the skilled artisan to
provide the claimed third data storage unit to ‘cache’ the images
requested from the second storage unit so that if the customer
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