Hello! New member here, long time WD owner.
I am planning to buy an EX4 diskless unit, so that I can populate with drives over time. The user manual only covers pre-populated units, and earlier threads which discuss this are from a year ago, before changes in the firmware, so I’m not entirely clear on the procedure. I hope someone can help me with this.
Is it possible to achieve one of these two scenarios WITHOUT DATA LOSS OR REFORMAT?
Start with an EX4 and a single drive which presently has data (JBOD?).
Later, add 2 more blank drives (total 3) to migrate to RAID5
Add a 4th drive to expand the array for more storage space?
Start with an EX4 and two drives, one which has data and a second blank
Configure above two discs as RAID1
Later, add a 3rd drive migrating to a RAID5
Finally adding a 4th drive to expand the RAID5 array for maximum capacity
Phrased another way, is it possible to:
Start with 1 disk as JBOD
Add 2nd disk to get to RAID1
Add 3rd disk to get to RAID5
Add 4th disk as RAID5 to max out capacity
I think this is referred to as an ‘online migration’ or ‘horizontal migration’, but again, the important thing I’m after is no loss of my existing data on the drive I presently use.
Thanks in advance!