Synology DS107+ - Adding an HDD to a RAID 5;RAID 6 Volume

2. Replace the first internal hard drive with a larger hard drive.
3. Turn on the Synology Product and rebuild the volume.
4. Repeat step 1 to 3 until all internal hard drives are replaced with larger hard
drives.
5. Click the Expand button to expand the volume size.
p.s. For hot-swappable models, you can perform the above procedures when
the model is powered on.
Adding an HDD to a RAID 5/RAID 6 Volume*
You can expand the storage capacity of the RAID 5/RAID 6 volume by adding a
spare HDD to the RAID 5/RAID 6 volume. Please refer to the online Help on the
"Storage > Volume" page of the Web Management UI for detailed instructions.
* Supported on specific models only. Please refer to the product Specification table.
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