2 - 4 Stunden
Wanted my stock 2011 mac mini 2.5 to fly.
Following your instructional video, the steps were fairly clear and straightforward. Hardware-wise, it was a piece of cake.... software configuration on the other hand, especially Win 7 running in Bootcamp, that took me the longest time to get right.
In the video, you twisted the power plug counter-clockwise and pulled out the power supply very easily. I got stuck here for a moment as the power plug would not budge, until I realized that there was a metal cotter pin of sorts preventing this type of removal.. I don't remember seeing this in the video.
Now, if I had a simple scenario with one OS, like just adding an extra drive, or replacing the 5400rpm HD, I'd be done in no time flat. In my configuration, I dual-boot between Lion and Win 7 and wanted the SSD as my new boot drive, so I used CCC and Winclone to copy the two partitions respectively (google for instructions). That wasn't so bad, but once I had a two-partition replica on the new SSD, I should have popped the SATA connector on the original HD and booted up only into the two partitions of the SSD to make sure the new Win 7 and Lion clones were happy.
Instead, I left both the SSD and HD drives connected (4 bootable partitions), and after booting into the old Win 7, it took over the C: drive scheme, leaving me to use another drive letter for the new Win 7 partition on the SSD. Problem here is that it's a bit difficult moving the C: drive to another partition without more finagling and googling for help. Another problem I faced was that both Win 7 partitions had the same drive ID which Windows didn't like. I would have saved a lot of time and grief by simply getting the SSD ready first, then adding the HD second as a secondary drive.
But as mentioned, the hardware installation was a breeze.