vSphere Design Standards

Scrollbars allow users to control content visibility. The size of the thumb indicates the amount of unseen content.

Guidelines

Minimize the use of horizontal scrollbars by laying out content vertically as much as possible.
While horizontal scrolling is unavoidable in a datagrid, strive to choose a set of default columns that minimize scrolling.
Never use horizontal scrolling in a table of contents (as in multipage dialogs, wizards, and the third level of navigation in a tab).
Avoid vertical scrolling of more than two pages of content. If you have more pages, consider breaking the content into separate categories or pages.
Don't allow the scrolling of content inside other scrolling content, such that double scroll bars appear.
Don't bury important controls in areas that scroll off the visible content area by default.