Can you please help me in deciding how can I build a raid 5 on my WD pr4100 4 bay nas.my question is if i want to build a raid 5 the minimum hard drives I can use is 3 if i initially put 3 drives and then later on add the 4th drive will this work or not
Or should I just put 4 drives straight away
I will use wd red pro 18 tb drives.
Here’s what to do, to get the drive added to the array: (without losing any data)
- Login to admin panel. Open Storage Tab at the top
- Open ‘Raid Volume’ section
- click on ‘Change RAID Mode’
- click check box ‘Expand RAID Volume’.
- Click Next
- The process will start by doing a quick disk health status check.
- Click Next. Drive is operating successfully and is now part of the array.

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