Why does my hard drive report less capacity than indicated on the drive's label?

There is detail answer from hard drive manufactures such as Seagate. Please refer to the following:https://www.seagate.com/support/kb/why-does-my-hard-drive-report-less-capacity-than-indicated-on-the-...

Can I move the HDD and keep the data from ASUSTOR NAS to another ASUSTOR NAS？

Yes。ASUSTOR’s built-in system migration mechanism allows you to quickly upgrade from your current NAS model to a newer one by moving your original hard disks to a new NAS system.

How to use Seagate IronWolf Health Management？

If you are using a Seagate IronWolf or IronWolf Pro series hard disk with a capacity more than 4TB(capacity less than 4TB not supported), just navigate to [Storage Manager] → [Disk] → [Disk Doctor] an...

Which ASUSTOR NAS supports Seagate IronWolf Health Management?

What is Seagate IronWolf Health Management？

Seagate IronWolf Health Management (IHM) is a hard disk diagnostic tool integrated in ADM 3.0. Seagate IHM is developed by Seagate, if you want to know about it,