Raid 5 569Pro Recover

[hondato]

Good evening, I'm trying to figure out if it is possible to recover some folders from my Qnap 569 pro with raid 5. Unfortunately, I didn't have time to program an external backup like the other folders. The description of the problem is that about 2 months ago I had the first problem on one disc, then I was busy with offsite work and unfortunately a second disc also turned orange. I thought the degraded condition allowed me to replace the ordered disk, but I made the mistake of turning off the server to avoid making it work. Conclusion 1 red and one orange disc. The fifth orange disk shows smart error, and I can't see my folders. I thank those who can advise how to recover, now I have purchased 2 hd of the same size but I can not rebuild.

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[~] # md_checker

Welcome to MD superblock checker (v1.4) - have a nice day~

Scanning system...

HAL firmware detected!
Scanning Enclosure 0...

RAID metadata found!
UUID:		d497f404:5e604725:e45d4489:ef2ff6ed
Level:		raid5
Devices:	5
Name:		md1
Chunk Size:	64K
md Version:	1.0
Creation Time:	Oct 15 14:29:57 2017
Status:		OFFLINE
===============================================================================
 Disk | Device | # | Status |   Last Update Time   | Events | Array State
===============================================================================
   1  /dev/sdb3  0   Active   Aug 30 21:22:34 2021   421467   A.AAA                    
   2  /dev/sdc3  1  Rebuild   Aug 28 12:23:56 2021   290086   AAAAA                    
   3  /dev/sdd3  2   Active   Aug 30 21:22:34 2021   421467   A.AAA                    
   4  /dev/sde3  3   Active   Aug 30 21:22:34 2021   421467   A.AAA                    
   5  /dev/sdf3  4   Active   Aug 30 21:15:49 2021   418389   A.AAA                    
===============================================================================

[holger_kuehn]

If you lost two drives your data is toast. You can try to put the better one in again and try to let it rebuild the fourth drive.