Intended to provide our own search engines and external engines
with highly rich, chapter-representative searchable text on the
opening pages of each chapter. Because it is UNCORRECTED
material, please consider the following text as a useful but
insufficient proxy for the authoritative book pages. Do not use
for reproduction, copying, pasting, or reading; exclusively for
search engines. OCR for page 27 Review of NASA'S Distributed
Active Archive Centers 2 Overview of the DAAC System This
chapter synthesizes overarching issues that were noted, with
varying perspectives, in the individual DAAC reviews. The issues
are related to (1) the DAACs as a system, (2) the need for
flexible approaches for implementing EOSDIS, (3) the
relationship between the DAACs and their users, (4) life-cycle
data management, and (5) the role of NASA. WHAT IS A DAAC? WHY A
SYSTEM? DAAC Versus Data Center As noted in Chapter 1, the DAACs
were created to be different from data centers. Data centers are
permanent facilities—their primary