What happens when Hyper-V replication is paused

Hi,
Could someone please point me in the direction of detailed technical information regarding what happens when replication is paused for a Hyper-V VM?   I've had a dig around but not found anything..
Does the source system still generate delta's which accumulate on disk somewhere, ready to be sent to the target once replication is resumed in a similar way to SQL log shipping, or is the whole processes paused and a new replication cycle started?
I need to asses the impact of pausing replication on a number of VM's for an extended period (probably in the region of 4-6 hours) for maintenance on a host, where there is fairly limited replication bandwidth.
Many thanks.

Hi EntArch2012,
You can pause the replication between primary and replica server .
There will be a .HRL file beside the VHD file of the VM which enabled replica .
After you enabled replica successfully , the changes of the VHD will be stored in the HRL file then send to the replica server regularly  to achieve synchronization .
Hope this article is helpful :
http://www.microsoft.com/en-us/download/details.aspx?id=29016
Best Regards
Elton Ji
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