Very fast - although the NAS was new too.

One drive arrived in poor condition. The NAS reported 'severe damage' with over 9,000 bad sectors.

Purchased two of these drives but one arrived defective. Customer service handled return (RMA) promptly.

The speed my NAS now has is incredible.

Upgrade from the Barracuda "computer" version to these bad boys on my QNAP NAS. Was very surprised at the increased speed I now can access my Network files. Good purchase.

The Seagate NAS drive is worth the extra money. I have had a 3TB Seagate NAS for a while now. I ran out of space. It runs smooth and quiet. The new 4TB runs almost as smooth as the 3TB. My older 500gig Seagate is still running smooth and quiet as a backup drive.

Losing 3 or 4 TB's worth of stuff and having to re-download things like your Steam, Ubisoft and Epic games, ect. is not worth saving a bit of cash and going for a cheaper drive. I am glad i didn't cheap out because your data is worth way more than the cost of the drive.

Not SMR

Returned the 2 red SMR garbage drives from the other brand that my array kept marking as failed. These are CMR as they should be for a NAS. Vibration detection and lower price too.