I was having a problem with a surface which I was trying to run Active Backup for Business to do a bare metal backup of the C drive to a Synology NAS box.  It kept failing with an error code 8004230f.  Researching that error, I found some info that it could be a conflict with other backup software, but there was no other backup software installed on the box (ever). 

The event viewer showed some errors for VSS (Volume Shadow Copy) which were found under the Event Viewer > Windows Logs > Application and had a source of "VSS".  The errors were 22 and 12292.  Looking those errors up, I found this which solved the problem - that is, I backed up the registry and then removed the VSS provider key for Hyper-V, rebooted and kicked off a backup (from the Synology) which is now running without errors.

Working on a rackmount to hold two TP-LINK TL-SG108 GigE switches and a pair of 40mm fans.  Currently I am planning to have the fans controlled by a thermostat, however that requires some more expensive 4 wire fans (with the board I am considering).  When it is done and printed, it will be posted up to Thingiverse with a BOM.  If I can't find cheaper fans I will probably only run it on one fan and use a blank in the other slot.  The ventilation will be minimal anyway since the rack this will go into has an open top.

Also made some modules to fit a pair of Trendnet TEG-S80g switches which are similar.  With this design I can have a mix of the Trendnet and TP-Link 8 port GE switches on the same 1U space. 

Update - After printing it, I found that the TP-Link switches fit just about perfectly, but the Trendnet switch does not.  It's not really worth the time to fix it since the prints alone take 7+ hours.  There is also some play at the center joint which I am working on fixing.  I may glue the side modules to the center since the dovetail does not really hold it all as tightly as necessary.  I decided not to print the fan module since I don't need it. 

After printing, the improved joint between the center and side modules is very good.  It is so tight that in order to separate them, it takes a few swift hits on the side of a desk.  The sag problem of the previous design seems to be gone.  Since everything seems to be working OK, I uploaded it here.  There are several remixes, including the keystone modules here  and  here, and another version that fits Netgear 8 port switches here. Finally, there is a version for Trendnet 8-port switches here.

There is a 2nd version of the center module which is a small compartment instead of the dual 40mm fans.  This version will require some M3 inserts for the door, but possibly some glue would also work.

Update - I found I needed a few more RJ45 jacks on my patch panel so I am making a couple of modules that will hold 9 keystone jacks each.  Thanks to MWU at Thingiverse for the keystone receiver model.