The Modified Pages Section

The archive database that represents a database dump is read-only. No user transactions are allowed, however, some some modifications are allowed.

For example:

These modified and newly allocated database pages cannot be stored within the database dump and its stripes, therefore, an archive database requires some traditional database storage. This disk space is referred to as the modified pages section, and you can allocate it using the create archive database and alter database commands.

The modified pages section is divided into two segments:

When you resize the modified pages section, sysusages rows are updated in the master database.