A page is the physical unit of disk storage
that the database server uses to read from and write to Informix® databases.
The following figure illustrates the concept of a page, represented
by a darkened sector of a disk platter.Figure 1. A page on disk
On most UNIX™ platforms, the
page size is 2 KB. On Windows™,
the page size is 4 KB. Because your hardware determines the size of
your page, you cannot alter this value.
A chunk contains a certain number of pages, as the following figure
illustrates. A page is always entirely contained within a chunk; that
is, a page cannot cross chunk boundaries.Figure 2. A chunk, logically separated into a series
of pages
For information about how the database server structures data within
a page, see the chapter on disk structures and storage in the Informix® Administrator's
Reference
