DL4100 raid migration

My Cloud OS 3 Personal & Network Attached Storage My Cloud DL Series
1

In My Cloud: Migrating or Upgrading a RAID 1 to a RAID 5 by Adding Drives
It is stated at the top of the first page that :

"When adding two additional drives to the 4 bay My Cloud, the current 2 drive RAID 1 mirror can be migrated to a 4 drive RAID 5 or RAID 10 without data loss. "

I am adding 2 - 4 TB Reds to a DL4100 that already has 2 - 4 TB Reds and do not know were I could back all the data I have, it is 95% full, so is the part about “without data loss.” True?

3

The DL4100 is the backup device being used.

5

Lets just skip that line of answers and try to answer the original question.
Is the statement, In My Cloud: Migrating or Upgrading a RAID 1 to a RAID 5 by Adding Drives, made about migration true of false.

7

How did the migration go for you? I’m about to need to do this for my DL4100.