Purpose of SCCM Last run datetime

[Donald Small1]

I need some help understanding how the 'Use last run datetime' option works within the SCCM 2012 v2 Computer Identity Data Source for SCCM imports.

We have the following values set:

Use last run datetime: enabled

Last run datetime: '2018-10-06 01:33:39.0'  (NOTE: I am writing this at 2018-10-05 13:54)

Last run database field: LastHWScan

We have a device, that when the import is executed, is not getting picked up, but if we disable the Use last run datetime then it is picked up.  The Value on the device for the LastHWScan field is 2018-10-01 10:31:25.000.  We have had this import running every 3 hours for a month and it has never picked up this device.

So I want to know when should you have the last run datetime enabled?  With it enabled, am I running the risk of not catching other devices?  And finally, with it enabled, why is this one particular device getting missed?

Thanks in advance!

Donald

[Ct111]

Hi Donald,

Would like to know once , what is the total number of assets you were importing daily from SCCM. Currently , in our organization there are 25,000 devices so need to know that whether keeping it is unchecked is a solution or not. Because that number is still huge.