Spent $1.1k for RAID1 data recovery, what's next to backup RAID1?
Had a 2-bay Dlink 320L which I rebuild RAID1 twice in the span of last 5yrs+. Had since swapped both 2TB 3.5" to 2.5" Crucial MX500 SSD. Last week, NAS failed to boot (blinking power LED) so I purchased a new 2-bay Synology 223j. Turns out I had to format both SSD to use 223j and I learnt that I can't migrate RAID1 from 1 NAS to another (at least not from 1 brand to the other) easily.
Tried Ubuntu LiveCD to mount and extract data (using command "mdadm") but the metadata and superblock were both corrupted in both SSD. Was quoted $1.1k by professional data recovery on both disks for best data recovery effort (or 50% fee for 1 disk).
While the data recovery is in progress, I am planning to backup the new RAID1.
I see 2 options here.
a) Use the new Synology 223j as primary NAS now, and connect the 320L as backup NAS. Sync important data only (e.g., family photos) from 223j to 320L on daily or weekly basis.
[synology NAS] --- backup/ sync to --> [dlink NAS]
b) Dlink 320L is a EOL product more than 10 years ago (2013?), stop using it!
Use the new Synology 223j and backup to remote "storage VPS"
[synology NAS] --- backup/ sync to --> [remote storage VPS]
With (a), everything will be secure in the home network, no risk of leaking family photos etc. but (b) could be a viable option since the 320L hardware might be the cause to why both Crucial SSD got corrupted in the 1st place, not to mention I had to rebuild RAID1 twice before.
These are my thoughts, I hope to see/hear others, and deploy the best approach to backup the RAID1.