Hi haru0
As NA9D (Jon) just stated above, it is not. I covered my experience in the original post, but I will repeat it. When I did my first QuTS h5.3.1 install, it was done on my personal TS-h886 that was running QuTS h5.2.7, and Storage and Snapshots simply became Storage Manager (that is when I discovered that Snapshot Manager was now a separate app). So in the updates I did for clients, I did not see this issue.
Then 2 days ago I built a new TVS-h874 (new, out of the box) - I typically build the QNAP with whatever firmware QNAP provides, and then I do the firmware update. In this example, I install 2 M.2 NVMe drives in the h874 as Storage Pool 1, and installed a single 20 TB SATA drive. It came with QuTS h5.1.7. I built storage pool 1, saw all 3 drives, and did the firmware update to QuTS h5.3.1. Upon reboot, I installed the additional 7 SATA drives, and went to build Storage Pool 2 with the 8 SATA drives. But there was NO Storage Manager - and there was no longer Storage & Snapshots. What you are showing us in your image above - WAS NOT THERE. I was about to call QNAP support, but out of desperation (and embarassment) I searched in the QNAP App Center - and there it was - Storage Manager. So I downloaded it, and it worked properly.
In my opinion, this is a MISTAKE. Storage Manager should be a default install. I now question - when you build a new QNAP QuTS system, it asks “do you want to update to the latest firmware”. I always say NO. What if I said YES. So now the system boots up with QuTS 5.3.1 and the drives are not formatted. If you go to the app center to get Storage Manager, and no drives are set up - exactly where is it going to download anything ?
bob zelin