Hello, 

Currently we have an active Office 365 subscription, which is linked to our domain controller via the Windows Essentials dashboard add-on for Windows 2012 R2 Standard. This does the job nicely of ensuring all passwords remain sync'd between the AD and O365. 

I have been reading around, and it seems the best/common option is to use DirSync, as it will allow for extra features to use the single sign on servers. Ideally I would like to start putting OneDrive for business in place so users can backup files to the "Cloud"

I would like to know If I would be able to implement DirSync with an active/Production Office 365 account? I have a feeling DirSync needs to be configured before actively using Office 365? 

Are there any online videos or materials that will be useful? Any information great! 

Thanks in advance. 

Hi,

I hope this is helpful:

Office 365 DirSync Content Map

http://community.office365.com/en-us/w/sso/office-365-dirsync-content-map.aspx?ss=86d0b242-eed9-4b6b-8257-1aa7d9738a89

The link above contains some collections of Office 365 DirSync Content, you may find useful information from them.

Since the scenario is between Office 365 and AD, it's better to post the question in Office 365 Community forum:

http://community.office365.com/en-us/f/default.aspx

Regards,

Melon Chen
TechNet Community Support