Gigawatt wrote:
Hi,
Apologies if this has already been answered elsewhere but I couldn’t find anything on the exact subject.
Recently bought my WD My Cloud EX4, and currently have 1x 4TB, 1x 2TB and 2x 1TB drives that I plan to deploy as RAID 5. I want to eventually replace all the smaller HDDs with 4TB drives.
My question is, once the array has 4x 4TB drives, will it automatically go up to 16GB? Or will it stay at 4TB (determined by the 2 smallest HDDs when the RAID was first created)?
Thanks
First of all, you need drives of the same size or everything will default to a build that’s based on the smallest drive. So, your 4TB + 2TB + 2TB will equal 2 + 2 + 2 TBs. If you want to make the most of the space, you can use JBOD and you will have 4 + 2 + 2 TBs of space. But you won’t have the reduncancy.
I forgot to add…
To your question, if you replace the 2 - 2TB drives with 4TB drives, you will need to rebuild the RAID to get the expanded capacity of the drives.
