How to replace existing HDD with bigger ones and gain more storage space on Synology DSM 7
Replace Drive to Expand Storage Capacity
In the steps below, we will provide an example of replacing the drives of an SHR storage pool.
To replace drives:
Launch Storage Manager.
Go to Storage Pool to see which existing drive is the smallest.
Power off your Synology NAS. (Skip this step if your Synology NAS supports hot-swapping.)
Remove the smallest of the member drives and install a new, larger drive.
Note: To avoid harming yourself or damaging your Synology NAS, please follow the drive installation instructions found in the Hardware Installation Guide for your Synology product.
Power on your Synology NAS.
Launch Storage Manager again.
Go to HDD/SSD to make sure the new drive is recognized.
The status of your storage pool should be Degraded. Select the storage pool, click Repair from the Action drop-down menu.
Select the replacement drive to add to the storage pool. Then follow the steps of the wizard to finish.
Repeat the above process until all desired drives have been replaced with larger ones.
