My Cloud PR4100 NAS 2x8TB OS3 Add 2x8TB

[Felix-Cat]

I have a WD My Cloud PR4100 NAS 2x8TB (2x WD 8TB Red 5400 rpm HDDs) running OS3 with RAID-1, bought it approx. 3 years ago. Recently I decided to purchase 2x WD 8TB Red 5400 rpm HDDs.

My desire is to extend my storage from 8TB to 16TB.

Since I’m currently running RAID-1, my question is "Can I extend my PR4100 to obtain a total of 16TB RAID, and if so, what would be the recommended steps to successfully upgrade my storage from 8TB to 16TB?

Please note that I do not want to lose any data on my current 2x8TB HDDs.
Please note that I do not wish to upgrade the OS from OS3 to OS5.

[Bennor]

@Felix-Cat

I have a WD My Cloud PR4100 NAS…

See the dedicated subforum for the Pro Series of devices where users more familiar with that device may be able to assist. This subforum (My Cloud) generally deals with a different device, the single bay/single drive My Cloud.

OS3 My Cloud Pro Series
http://community.wd.com/c/network-attached-storage/my-cloud-pro-series/214