Please help bunch of newbie question.

[stalinski]

Hello!

I current have an Asustor AS5110T and I love it, 10-bays!

Current setup: 5x 6TB in Raid5. Sadly, three of these drives are failing. I want to upgrade to RAID 6 for dual failure redundancy. I realize I can't just convert RAID 5 to RAID 6 without formatting, so I am wondering if I can do this: Buy more drives (8 or 10TB) minimum 4, insert them into my AS5110T, create a separate RAID6 setup with those, and move the files from my existing RAID 5 array to the newly created RAID 6 array.

Is this possible? Or any other better way to change to RAID 6?

[orion]

The best way to upgrade RAID-5 to RAID-6 is to add one disk (size >= the current disk). Here is the guide: https://www.asustor.com/en/online/Colle ... ?topic=352

However, you got "three of these drives are failing". I'm wondering why you can still access your RAID-5 volume ! RAID-5 can only tolerant one disk failure. Anyway, if your condition is true, the procedure above is dangerous too. You should backup your data externally. Then, reinitialize NAS with new good disks. Then copy data back.