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Forum Discussion
MartyMcFly66
Mar 25, 2021Aspirant
Netgear ReadyNas 6TB WD60EFRX
Hi, Currently, I'm using 4x WD30EFRX 3TB harddisks in a RAID-5 config on my ReadyNas, but the volume is reaching 100% diskuse. I've got another (Zyxel) NAS which is using 4x WD60EFRX 6TB harddis...
- Mar 26, 2021
MartyMcFly66 wrote:
but according to the compatibility list, the ReadyNas only supports disks up to 4TB size.
I have at least one post from someone using a WD60EFRX in an NV+ v2.
Netgear hasn't updated the HCL for a very long time (they don't test new disk models on legacy NAS, and the NV+ v2 became legacy when OS 6 was launched in 2013).
There are two limitations on volume size in your NAS.
- the maximum volume size is 16 TiB
- a volume cannot grow more than 8 TiB from it's initial size.
The only way around these limits is to do a factory reset with the new drives in place.
If you started with 4x3TB, then you have a 9 TB volume now - so you could expand it to the full 16 TiB.
4x6TB be too large (18 TB). But you could use a setup of mixed sizes. 3x6TB+3TB would give you a 15 TB volume.
The WD60EFRX should be ok. But I would avoid the WD60EFAX - which is SMR.
StephenB
Mar 26, 2021Guru - Experienced User
MartyMcFly66 wrote:
but according to the compatibility list, the ReadyNas only supports disks up to 4TB size.
I have at least one post from someone using a WD60EFRX in an NV+ v2.
Netgear hasn't updated the HCL for a very long time (they don't test new disk models on legacy NAS, and the NV+ v2 became legacy when OS 6 was launched in 2013).
There are two limitations on volume size in your NAS.
- the maximum volume size is 16 TiB
- a volume cannot grow more than 8 TiB from it's initial size.
The only way around these limits is to do a factory reset with the new drives in place.
If you started with 4x3TB, then you have a 9 TB volume now - so you could expand it to the full 16 TiB.
4x6TB be too large (18 TB). But you could use a setup of mixed sizes. 3x6TB+3TB would give you a 15 TB volume.
The WD60EFRX should be ok. But I would avoid the WD60EFAX - which is SMR.
MartyMcFly66
Mar 26, 2021Aspirant
Hi Stephen,
Thanks for your comprehensive reply.
One more question though about "...But you could use a setup of mixed sizes. 3x6TB+3TB would give you a 15 TB volume..."
I thought this configuration is not possible in a Raid-5 config in which all disks have to be the same size?
- SandsharkMar 26, 2021Sensei - Experienced User
In true RAID5, that is true. If you used FlexRAID and RAID5, then you have that limitation. But if you used XRAID2, then you can have drives of different sizes. In the case of 3x6TB + 1x3TB, the NAS will create two "layers", one RAID5 with 3TB per drive and one with the additional 3TB from each 6TB drive and then concatenate them together into one volume.
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