HankTheCat Posted October 23, 2017 Share Posted October 23, 2017 (edited) As mentioned in other threads, I am trying to setup a replacement DS5100 I received from Western Digital. It came with two hard drives, and they appear to be the same size as the current drives. What I did was put the old hard drives in the new DS5100 and booted up. All my data was there and I was able to configure the new machine to my liking. However now I have a question about how these drives are being used. From the screenshot, you can see D: shows 1.53TB free of 3.63TB available. I also included the view from Disk Manager, as well as from the WD disk utility. What is going on here? Is it combining drive 1 and drive 2 (each advertised as 2TB) to make a 4TB D drive? In the event a drive goes bad, this means I’m unprotected, correct? How can I get to a state where I’m protected in case of a drive failure? Assuming I want to keep 4TB, would that require me getting two new 4TB drives and then adding them in a mirroring RAID configuration and then copying the data from D over to that new raid drive? BTW, here are some screenshots of what I’m seeing. Edited October 23, 2017 by HankTheCat Link to comment Share on other sites More sharing options...
Drashna Jaelre Posted October 24, 2017 Share Posted October 24, 2017 The D:\ drive is in a hardware RAID array, from the looks of it. This looks to be a RAID0, where one disk fails, and you lose everything. that's why these two disks are showing up as one, and 4TBs, but the other disk just shows up normally. Link to comment Share on other sites More sharing options...
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