Synology HA cluster - Add disks


We need to add (NOT replace) disks to a Synology HA Cluster, and documentation seems to miss this. In particular, we have a RAID-5 HA cluster, we need to add 2 x 12 TB disks to each node (different RAID1 array).

Any help will be greatly appreciated!

Best regards


I would contact their support to confirm the layouts.

Thanks Tom, will do that.

So, for others to benefit, the answer of Synology’s support is:

Adding disks to the HA is quite straighforward:

Just insert the disks in the same Slots in the active and passive Server.

Then you can create a new RAID on the from the Storage-Manager on the active Server and thechanges will be automatically synced to the passive Server.

Best regards