Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Has anyone used this in a professional video production setting?  Can I use this to edit from, connecting 3-5 editing systems to? How are R/W speeds?
Document: Again, not overly rugged but fine. The unit comes with two bags of screws, one for drives with 6-32 threads (which nearly all 3.5" drives use) and another with M5 threads (for 2.5" drives).
But sharing NFS/AFS/SMB all on one share does have permission problems, but I have not tested with DSM 5.0+ since it has come out. Time Machine support, along with quotas (which is need for Time Machine since it will use as much space as you give it) also works great.I know I am not using the full power of the device, since there are so many extra features. Heck there is even a email server.
Plex is also great, but you need to use the one on their website to get the latest version instead of downloading from Synology. Transcoding through Plex on the DiskStation not so great since it is not that powerful of a processor, so I ended up setting up a separate Plex server.
AudioStation is good (I don't use this outside of my firewall), but I really love PhotoStation. I use to use gallery2/3, minishowcase, or even manual html page for sharing photos with family, but configuring these were a beast. I did have problems getting GD with PHP to work, even though it was enabled with the disrto of PHP that the DiskStation comes with.
I started my Synology habit with a DS1010+, then sold that and got a ds1511+...but when they announced the 2413+ it was time to go get one. I have populated it with the WD Red 3 tb drives. After a year, almost, it has been running great.I did lose one drive last week, which oddly didn't give any warning until the system said the raid had degraded. Easy process to get it rma'd with WD.
However, this speed is only for files larger than 5gb. Since I am transferring relatively smaller files between 1mb-30mb (like photos, Word, Powerpoint and Excel documents, etc), my speeds are on average 70mb/sec. This is significantly slower than my old file server that gives me about 105 mb/sec for the same set of files (my old file server is still alive, so I did a test comparison multiple times).
Synology support informed me that their larger units with Xeon processors should be able to offer this type of speed, but upon checking the spec sheets on the Synology site, it appears that they too would experience the same speeds.
This is an amazing piece of equipment. If you have a small design studio with a half dozen or more 2-4TB disks on a network, each one requiring attention, organizing and a set of folders, not to mention backing up, this will take your 5-10 drives and make them into a single addressable drive that is incredibly efficient at backing itself up RAID style.
For instance, I run the Logitech Media Server package, which allows me to use the DS2413+ as the music and Internet radio server for all of my Logitech/Slim Devices streaming players. There are folks out there who have created their own Synology packages; do a Web search and you'll see quite a few of them.
I chose the 12-drive DS2413+ because it would allow me to create a RAID 6 volume across all 12 drives; this gave me a good balance between capacity and protection. (In a RAID 6 set, the equivalent of 2 drives worth of space is used for data protection. So, a 12-drive RAID 6 set gives 10 drives worth of usable capacity. )PACKAGING:My DS2413+ arrived triple-boxed. The outer box was plain cardboard with shipping labels on it.
Answer: That really depends on what exactly you are editing.  All I can tell you is that in a residential environment I have copied about 130GB of large files in around 45 minutes, which is around 48 MBps (probably close to external hard drive max transfer speed).  This shows the CPU usage jump to 35-40%.  I don't know if this helps answering your question.