Unused. No smokers or pets. There is only a small stain on the last page. It seems that there is no problem with use. From server types and roles to operation and virtualization - Title: This Book Covers Everything You Need to Know About Servers - Author: Masahiro Kihashi - Publisher: SB Creative Corp. - Illustrated Explanation: Illustrated and Diagrammed - Contents: Explains server types, roles, operation, and virtualization - Number of pages: 191 pages - Price: 1680 yen (excluding tax) Thank you for viewing.