netgear readynas nitial setup problem - model name RN42200

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humadon1 wrote:

 

When I go to System - volumes (see attached screenshot) I only see one drive.

 

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Your screenshot isn't showing the volume page.  You need to log into the NAS admin UI (for instance by clicking on "admin" in RAIDar, or by browsing to https://10.1.10.252/admin

The volume page looks like this:

So log into the admin web ui and look at that page (selecting "system" in the top row, and "volume" in the second row).

But I think Sandshark is already pointing you in the right direction - and that what you are seeing is normal behavior.

First of all, there is a difference between a volume and a disk.  With RAID, a volume usually is built from more than one disk. When you look at the volume page, I'm pretty sure you will see a screen shot similar to the one I posted above (except yours will show two 4 TB drives).

That is, you'll also see a single RAID-1 volume called "data".  That volume is built from both your disks. 

You'll notice that in my screenshot the capacity of the volume is 1 TB, even though the total of the disks is 2 TB.  That is a result of RAID-1.  The two disks are mirrored (everything written to one is written to the other).  That protects my data if one disk fails.

First let's confirm that you are seeing a 4 TB RAID-1 volume on that page.  Then we can talk through whether that is the right mode for you, and what options you have if it isn't the right mode.