IDK... I was pretty impressed with Synology. I did something stupid... and they got me all fixed up after a couple of remote sessions. I haven't seen any data loss because of it.

I'm in the process of transiting from SHR+BTRFS among 4 qty - 4TB NAS drives to 2 qty 10TB NAS + 2 qty 4TB NAS drives... for 18TB w/ 10TB of protection. Standard old Raid5 would have been only 12TB with 4TB of protection and 12TB of waisted space.

I'm very glad I went with the DS916+... the techsupport was phenomenal.

Home movie editor? Maybe he has an army of chat-er-bate minions he needs to video edit for?
Maybe it's a lucrative business model?

No. I didn't get a sale.
One was a WD 10TB "shuck"... the other is a 10TB IronWolf Pro which appears to not be compatible with the Synology.
It's probably going back to Amazon sometime this week. I have another 10TB "shuck" candidate; that will probably get that done to replace the 10TB Iron Wolf which is incompatible.

Synology root caused the reason why my IronWolf Pro 10TB wasn't being recognized by the enclosure. Apparently; Seagate in their infinite wisdom enabled something called:
Power up in standby on these drives.
which prevents the drive from automatic spin-up when power is applied. My 916+ nas OS doesn't know to send the proper command to enabled the disk motor; so it wouldn't spin up.

I downloaded SeaChest Utilities from Seagate and was able to configure the drive to disable PUIS. Once that was done; the drive was recognized and it's currently rebuilding the degraded array with the 10TB Iron Wolf.

I have all but one Red Pros in my 916+. Two Red pro 4TB and one IronWolf Pro 10TB. one white label Red Pro shucked from a 10TB WD backup enclosure. No issues what-so-ever; other than a problem reconfiguring the IronWolf Pro to disable PUIS.

It was an Ironwolf Pro - now that I think about it. Yes; you have to disable PUIS as in post 108above.

Last night I pulled my 10TB Iron Wolf Pro from the Synology NAS.
I'm returning it under warranty to Seagate for "IO errors" and Bad sectors. It started generating IO errors about 2mths ago... and the bad sectors had grown to over 4000 sectors.

Ofcourse; when I filed a ticket with Seagate's "pro" tech support - they wanted me to pull the drive and do some SegateTools testing with the drive in a PC.
What a bunch of hooey. You don't pull a live drive from a working RAID NAS box and do PC testing on it. That increases your exposure to catastrophic failure exponentially. Not to mention you have to re-sync the array over several days to get the drive synced back into the array. You don't do that on a drive that is already failing.

I called their 24/7 pro support line, and they forgo-ed the testing "requirement"... but they couldn't offer "cross ship" of a drive.
Had little choice but to shuck a 10TB WD easystore to get the bare 10TB drive... and am currently recovering the array to the new drive. Once I show the new drive is happy in it's place... I'll secure erase the Wolf and send it in for replacement.

Not impressed at all with "IronWolf Pro" support or their product. I get it; drives fail... but they didn't really do anything to "support" their product in it's intended application (a nas).

Rebuiild/recovery correct with the shucked white label 10TB WD.
I guess I need to boot my lanparty box and secure erase the IronWolf drive.
If the replacement fails; I'm also "done" with Seagate.

Update: Went into SeaTools to secure erase this IronWolf Pro drive. Couldn't even get the tool to do anything useful. Notices non-trivial amount of vibration from the drive. I'm guessing one of the bearings on the drive is shot. I'm surprised it made it this long.

We aren't talking about enough to walk the drive off of a desk or anything; but certainly not "buttery smooth" like it should be.

I'm glad I fought tech support to take the drive back... I'm actually surprised it didn't fall out of the array on it's own.

I'm running Plex on my DS916+. But not enough to really quantify it. I noticed mine had some problems transcoding 4k movies over wifi... but that's kinda to be expected. I'd think it'd be fine transcoding 1080p movies. For 4k; you really need a dedicated box with ethernet speeds - at least 100mb.