I waited until there were a few firmware revisions of OS5 before taking the plunge. So I did the upgrade last Monday. Here is my personal experience and observations so far.
Indexing took a total of 8 days with my 2+ TB of data (4 drives, RAID 5).
My remaining space before the upgrade was 585 GB
My remaining space after the upgrade and indexing completed was 457 GB
Therefore, the indexing and creation of thumbnails used 128 GB!! How? What? Why?
I went ahead and deleted 85 GB of pictures/videos today and they went to the NAS recycle bin, so after doing that, the 457 GB didn’t change as expected. The dashboard didn’t say it was indexing after doing this, but it obviously was because the drives had “indexing” type activity. This lasted for about 2 hours. After the drives stopped their activity, the 457 GB went to up to 463 GB, so the removal of indexing data was a total of 6 GB. Holy c-r-a-p. I can only conclude that the indexing and thumbnails for pictures/videos has a 7% overhead. Oh jeez, that’s not efficient.
Next, are my observations with the Mobile app.
While the app might be more robust and refined than the previous OS3 app, there is one thing I wasn’t expecting. I sync my pics and vids with this app, and I’m used to opening it on demand to start a backup. In the folder it backs up to, I’m used to taking those photos and organizing them in a different folder on the NAS, then deleting the backed up items when done. The old app used to know that after it uploaded pics and vids, that was it, it wouldn’t resync them if you deleted them on the NAS. The OS5 app now knows when you delete synced pics and vids in the backup folder, and will resync those again. This is unexpected, and unwanted.
Lastly, WD needs to make an option to disallow folders from being indexed. In the above scenario, I wouldn’t allow the NAS to index the mobile phone sync backup location. Now I have duplicates and I hate that.
Let’s hope that improvements can be made.
Thanks for reading.