Another problem with SMR is that some RAID systems can kill them in a matter of days. Read the fine print of your raid system's supported disks section to see if SMR is supported.
Drobo systems, for example, don't support SMR.
So, for example, recently we purchased three new Seagate 8TB Barracuda drives to add to our Drobo system. Within three days two of the drives had completely failed and the third was flashing up warning lights leading to an urgent purchase of non-Seagate drives to replace it.
Checking with Drobo and SMR drives aren't supported - are these SMR drives? I checked the online support sheet for the drive, no mention of SMR.
I emailed Seagate and they claim they don't even know!
"Thank you for contacting Seagate Support. "Typically"the new Barracuda over 8 TB uses SMR, we do not have access to this kind of information, so I can't confirm this."
But more digging revealed they are SMR.
https://www.reddit.com/r/DataH...
All three drives were returned to the dealer and a full refund received.
Since then I've been using Toshiba disks without any problems.