Wow my ReadyNAS Ultra won't start anymore

Hey, thanks for the very quick reply. Sorry for the aggressivity on first post, i am panicking at the idea of lsing 12tb of files :( This is my multimedia collection i have been building since 2007. I've never had problems with Netgear before, i'm just scared of losing everything... I know that hardware can't be perfect

I know RAID is not a backup, my two other ReadyNAS are backed up on external HDD... This is the only one that didn't have any backup and it's the one that failed :( I'm so unlucky

Can you disconnect the power to the unit, wait 5-10 minutes, reconnect the power and see if the NAS will boot?

Just tryed doing that, it still doesn't work :(

No. The disks can be migrated to another ReadyNAS on the same platform. See http://www.readynas.com/kb/faq/boot/how ... to_another

Here's my situation

Working NAS:
ReadyNas Ultra 4 Plus
4x 2TB drives

Failed NAS :
ReadyNas Ultra 4 (not the "plus" version)
4x 3TB drives

So it's not the exact same version, and also it's not the same sizes of HDD. Can you confirm me that i can switch my 12TB of HDD to the ReadyNas Ultra PLUS that is currently configured for 8TB ?

Please work with NetGear tech support.

Ok, i opened a support ticket

If they send you a RMA unit, put a spare disk (must not be from your array) in the replacement unit and update it to the same firmware as what you were running on the old unit (or a newer firmware).

I'm not sure which firmware i was using... I think i upgraded to latest but i'm not 100% sure... Is there a way i can tell ?