Add configuration options for backup

**Description**
Currently handlers lacks proper pagination support.

**Proposed solution**
Add configurable pagination with sensible defaults.

**Priority**: Low/Medium

The issue names handlers but no file or test; start by locating the handler code and the existing backup path, then inspect how pagination is currently handled. Done should mean pagination can be configured with documented sensible defaults, but the required options and expected behavior still need clarification.

Written by the indexing model from the issue text.