From: Mass Storage Reports

There are a number of consultants who also write regularly updated
in-depth reports (and sometimes post here) about various aspects of
the mass storage market; if you're going to get into this business or
are planning on spending many thousands or millions of dollars on
equipment, talking to one of them might be a good idea.

Sanjay Ranade (infotech@digex.com) is one of the ones who both writes
and posts here (he also has a couple of reasonably-priced books about
mass storage). Infotech's reports include HSM, network backup,
magtape and libraries.

Others include Disk/Trend (Mountain View, CA, 405-961-6209)
http://www.disktrend.com (good info there) and Freeman Reports
(805-963-3853).

Strategic Research Corporation has numerous white papers and good
links available at http://www.sresearch.com, including networked
storage. Some of them seem biased in particular directions, so caveat
emptor.