On #1, can you clarify the version of ConfigMgr you are using?  My 
understanding is that the behavior you described is as expected, but that this 
changed in the most recent current branch release to always be a background 
transfer.

No idea what’s going on with #2, but it would be interesting to see if it 
happens with a different PC.

Thanks,
-Michael

From: [email protected] [mailto:[email protected]] On 
Behalf Of Jay Marsett
Sent: Thursday, July 21, 2016 10:57 AM
To: [email protected]
Subject: [mssms] Bits and BranchCache revisited

Finally have some real feedback about BranchCache and BITS.  Got our site built 
and began unit testing, What we found so far;

1. Seems like all Package and Program downloads are BITS background transfers, 
so they follow rate limits, however, User initiated Application downloads STILL 
happen in the foreground.  Anyone seen any documentation that explains that?

2. Seeing a single test machine that randomly seems to have issues as large 
transfers from Branchcache are occuring.  The system becomes unstable, freezes 
as the hybrid drive software (lenovo expresscache) seems to peg the HD, as this 
is occuring, the transfer from cache seems to stop, and it begins to transfer 
from the DP.  Then randomly, back to the BranchCache.  Seems to happen with any 
type of "Cacheable" content, but only user initiated Application installs seem 
to ignore the BITS rate limits. Anyone seen this behavior?  Have any 
documentation that can explain it?

We haven't yet debugged the problem laptop yet, but theoretically, all of our 
test systems are identical.

Long story short, it makes it impossible to use self service with the 
AppCatalog if we can't reasonably plan for when this type of issue might occur 
in this BranchCache with BITS model.  If all Application based pushes need to 
be background, we can't use self service.

Please let me know your thoughts.


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