Server-oriented operating systems tend to have certain

features in common that make them more suitable for the

server environment, such as

1.GUI not available or optional

2.ability to reconfigure and update both hardware and

software to some extent without restart,

3.advanced backup facilities to permit regular and

frequent online backups of critical data,

4.transparent data transfer between different volumes or

devices,

5. flexible and advanced networking capabilities,

6.automation capabilities such as daemons in UNIX and

services in Windows, and

7.tight system security, with advanced user, resource,

data, and memory protection.