D5-300 , Can you replace a failed hard drive in RAID 1 and still keep the data?

[polaremail]

Hi,
Bought a D5-300, my first RAID setup. just to back up photos and videos. Configured to RAID 1 with 2 drives.
Question- in the future, if 1 drive failed---How do i replace the drive, and restore the data from the other RAID 1 disk?
Much appreciated in advance!

[TMeric]

Here are the steps to repair the DAS:

1. Turn off the DAS.
2. Remove the faulty hard drive and insert a new hard drive, ensuring that the new hard drive has a larger capacity than the previous one.
3. Restart the DAS, it will automatically initiate the repair process. Wait for the repair to complete.

[polaremail]

Thanks for the reply.

- Why it has to be a larger disk then the previous one? Will the same size HDD work?

- also if it's a late disks like mine is 16tb. That will take quite long to repair right? I was trying a bit. Like when I turn them back on. I could still power off until the next time power on. Is that correct?

- do I need the pc running to do that?

[TMeric]

Because different hard drive brands have different definitions of 1TB capacity, some are larger and some are smaller. So the safest approach is to make it larger than before.