Synology DS415+ (4-bay SATA NAS) is dead by motherboard (confirmed). There were 4x 1TB WD drives in something so called SHR (Synology Hybrid Raid) - which supposed to be enhancement of RAID-5 (first two partitions for system only.)
Now I need to assembly this array , but not very familiar with MDADM. So looking for someone to finish it. I made images out of drives (by the dd command), images are attached as loop devices (losetup), but mdadm awaits.
Be serious, only for guys with experience ... it's a home device ... in case of any fail, re-copying of images takes eternity.
Payoff belongs to successful or partially successful solver who provides a written procedure as well.
Estimation is around 30-50E per project (for an expert work for 5 minutes)