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Forum Discussion
Danila
Aug 17, 2017Aspirant
Unable to expand Raid-5
Hi! i have raid 5 3x4tb hdds installed and running. x-raid is off. I want to add 1tb hdd to raid 5 to expand free space for now. but when i click on expand button onadmin page i get this message :...
- Aug 17, 2017
Danila wrote:
Hi! i have raid 5 3x4tb hdds installed and running.
x-raid is off.
I want to add 1tb hdd to raid 5 to expand free space for now.
Well, you can't do that. You'd have to add at least a 4 TB drive.
What you can do is create a second volume (using JBOD) on the 1 TB disk. There will be no raid protection. You can then create some shares on it, and offload some data from the RAID-5 volume.
StephenB
Aug 17, 2017Guru - Experienced User
Danila wrote:
Hi! i have raid 5 3x4tb hdds installed and running.
x-raid is off.
I want to add 1tb hdd to raid 5 to expand free space for now.
Well, you can't do that. You'd have to add at least a 4 TB drive.
What you can do is create a second volume (using JBOD) on the 1 TB disk. There will be no raid protection. You can then create some shares on it, and offload some data from the RAID-5 volume.
- SandsharkAug 21, 2017Sensei - Experienced User
When I ran some experiments, I did find drives that should not be shown as available for expansion showing up in the list and then giving the "cannot be found" error if you try to add them. It's clearly a bug and confuses the issue. Since, as StephenB said, you can't do that, the NAS should not make it appear you can and then give such a confusing response when you try it.
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