22 October 2021
- Last edited 22 October 2021
I'm not so sure this is the case. But if you plan to go forward please let me know how this works out.
If you remove a 1TB drive and replace it with an 8TB drive it will rebuild to to 8TB drive, but only 1TB will be used. The rest of the drive will be unusable. You won't be able to just replace the drives and use the extra space.
There appear to be 2 ways to work this...
1. Buy a 2TB USB drive and copy the files off, install the 8TB drives your NS2300 and copy the files back (and now you have a USB backup). You can get a 2TB USB drive from Costco for about $70 and less on sale. I'm sure your local retailer also has something similar.
2. WARNING: Untested idea ahead.
a. Power down the NS2300.
b. Remove the 1TB drives.
c. Insert one 8TB drive and partition it to (4) 2TB partitions.
d. Power down the NS2300
e. Insert one of the mirror drives into the unused drive bay and power on the NS2300.
f. You should now see the 8TB partitions and a critical RAID1.
g. Copy the files with your OS from the mirror drive to one of the partitions on the 8TB drive.
h. When this is done power down, remove the mirror drive and insert the other 8TB drive, partition as mentioned.
This solution won't require an extra drive and you'll still have the 1TB drives as backup.