EX4100 - RAID 5 - Failed Drive now Failed Volume?

My Cloud OS 3 Personal & Network Attached Storage My Cloud EX4
1

Hi all,

My EX4100 is configured to RAID 5, with Drives 1 & 2 are 4Tb and Drives 3 & 4 are 3 Tb.
All are Western Digital RED Drives as well.

All has been working fine until recently when Drive 3 Failed and whilst I ordered a replacement, I’ve notice that the Volume has completely gone?

All Hard Drives are showing ‘Healthy’ but ‘Undefined’

It appears that according to the main home page, all files are there somewhere, but how do I install Drive 3 new hard drive and keep all my files?

Quite worried as we have a lot of photo’s etc from Family and when the kids were young that I can’t lose.

I’ve uploaded images of Screenshots and SMART Data from each drive if it helps.

Any help would be greatly appreciated.

Thanks

MC
MC974×602 42.4 KB
MC1
MC11013×767 47.5 KB

2

MC2
MC21019×697 55.4 KB
MC3
MC31012×706 36.1 KB

3

WD Drive 1
WD Drive 1485×546 58.7 KB
WD Drive 2
WD Drive 2485×545 58.8 KB

4

WD Drive 3
WD Drive 3483×544 58 KB
WD Drive 4
WD Drive 4483×544 54.9 KB

6

Really? I thought RAID 5 was supposed to be the better option for reliability and performance.

The reason was if a drive did fail, i wouldn’t lose any data and could replace the failed drive easily.

However it’s completely lost everything and I’m not even sure why the Volume Failed, but I’m not happy at all with WD, I bought WD for reliability, but that’s blown out of the window with that!

New HD’s and it fails big time.

So you wouldn’t recommend any RAID configuration?