Granted, the same effect could be achieved by having the storage system deposit the hard drive in a box, to be picked up by hand, but I can't come up with any explanation about that.
Watching the Death Star operating at low power was cool though, as well as knowing that it had undergone some "preliminary tests" before Episode IV.
Also, I had recently read this fanfiction [1] about a project manager working on the second Death Star, complaining about how much of the institutional knowledge from the first Death Star had been lost, making the second Death Star be quite rushed. The loss of the original plans made the fanfiction fit in even better.
[1] https://www.fanfiction.net/s/11685932/1/Instruments-of-Destr...
Oh yeah the slomo nuke that's literally outran by the characters. ಠ_ಠ
Clearly, the stronghold is not 600 miles from the city, as the shockwave was traveling faster than the rockwave, but it gives a good sense of timing. Note that the characters were not able to outrun the rockwave without the jump to hyperspace.
If I were retcon-ing the data silo design they're worried about a terror attack methodically destroying trillions of dollars of stored design data, or being too easy and fast to use, resulting in the wrong people putting together the wrong collection of ideas and figuring out the overall plan. You can do a lot of interesting compartmentalized grunt work engineering. So here's the static and dynamic loads gimmie a minimal mass truss design for those loads with a factor of safety of 9 but you don't have to be told thats the death star's laser cannon support thingy and it would be bad if enough people put 2 and 2 together.