We have sccm 2012 r2, and the device collection showing total No. of devices  is 2110 devices. Some of these devices are inactive, but when i run any report it shows me only 9++ devices. what about the rest of the devices. 

We have windows xp ( sp1, sp2 and sps3 ), windows 7, windows 8, windows server 2008 / r2 and windows server 2012. And we have also work group and network printer. 

Is total No. of devices include every workstation, all OS versions and printer in the network ( any kinfd of device and OS ). But when i run any report will shows only compatible devices and OS ? .  And what inactive means? Is it means the agent installed on these inactive devices or it only discovered by sccm and the agent is not installed. 

Regards,

First, what does "9++" mean?

ConfigMgr will only have data in the database for systems with a ConfigMgr agent on them (that rules out any XP non-SP3 systems as those aren't supported -- the fact that you have any is very scary security wise though).

Total number will include any devices discovered by ConfigMgr through one of the discovery methods. What is discovered is based upon which discoveries you have enabled and how they are configured.

Inactive means the client agent on the systems represented by the resource have not communicated with the site in the last 7 days (by default) -- this include hardware inventory, software inventory, heartbeat discovery, and machine policy requests.

First, what does "9++" mean?

ConfigMgr will only have data in the database for systems with a ConfigMgr agent on them (that rules out any XP non-SP3 systems as those aren't supported -- the fact that you have any is very scary security wise though).

Total number will include any devices discovered by ConfigMgr through one of the discovery methods. What is discovered is based upon which discoveries you have enabled and how they are configured.

Inactive means the client agent on the systems represented by the resource have not communicated with the site in the last 7 days (by default) -- this include hardware inventory, software inventory, heartbeat discovery, and machine policy requests.

You haven't really specified what device collection you're referring to, I can only assume that your talking about the 'Devices' menu selection, which isn't really a collection but more a list view of all devices.

Unless of course you're talking about the 'All Systems' collection, but this collection includes all systems discovered by ConfigMgr, including devices without a client installed, inactive clients etc...

Reports built in to ConfigMgr are designed to provide specific detail and will in a lot of cases filter their results to only display information for active clients, or devices with a client installed.

Again you haven't specified which report you're referring to either.

Device collection : all system

Report based on OS type : windows 7

We have in our organization windows ( 8, 7, xp sp1/2/3, windows server 2003, 2008 r2 and 2012 r2 ).

All systems collection showing 2,575 devices, but when run report only shows 9++ devices ( most of our os system is win7, and around 260 windows xp ).

The all systems collections displays all discovered devices, including active directory discovered objects, inactive clients etc...

The report for Windows 7, uses data uploaded from hardware inventory to display information about operating system. Hardware inventory data can be deleted out of the ConfigMgr database after a period of time if clients become inactive (this is based on the cleanup tasks specified in the site configuration)

I don't believe there is a problem and ConfigMgr is reporting on the information it has available

You can perform some additional analysis by creating a collection a specific a query to only include windows 7 devices and see how many results are returned. Or you can query the ConfigMgr database directly and analyse the results.

I'm not entirely sure what the nature of your query is. If your all systems collection displays 2500+ devices and your windows 7 report displays 900+ devices, then the other 500+ devices from the all systems collection will be made up of other operating systems, systems without clients installed and clients that are inactive or have not uploaded hardare inve