NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
mikeons
Nov 13, 2018Aspirant
ReadyNAS 3100 Maximum HDD size?
Greetings,
I soon will be receiving a ReadyNAS 3100 for personal/home use. While I understand that, according to the compatibility chart, the maximum size of HDD supported is 3TB per drive, I a...
- Nov 13, 2018
You can use larger disks. The hardware HCL hasn't been updated in some years (Netgear stopped qualifying disks for your system quite a while ago). I do recommend either NAS-purposed disks (WDC Red or Seagate Ironwolf) or enterprise class drives for your NAS.
There are two expansion limits that apply to OS 4.2 systems like the 3100
- a volume cannot be expanded over a 16 TiB ceiling
- a volume cannot be expanded more than 8 TiB from it's starting size
Both of these limits do create practical limitations that you should take into account when selecting the disk sizes. In particular, 4x6TB yields a volume size of 18 TB. You can do a factory install with 4x6TB drives, but it would not be expandable.
One thing I suggest is converting your 3100 to run OS-6, which has no known expansion limits. That isn't supported by Netgear, but since your 3100 is used, you can't get support from them anyway.
StephenB
Nov 13, 2018Guru - Experienced User
You can use larger disks. The hardware HCL hasn't been updated in some years (Netgear stopped qualifying disks for your system quite a while ago). I do recommend either NAS-purposed disks (WDC Red or Seagate Ironwolf) or enterprise class drives for your NAS.
There are two expansion limits that apply to OS 4.2 systems like the 3100
- a volume cannot be expanded over a 16 TiB ceiling
- a volume cannot be expanded more than 8 TiB from it's starting size
Both of these limits do create practical limitations that you should take into account when selecting the disk sizes. In particular, 4x6TB yields a volume size of 18 TB. You can do a factory install with 4x6TB drives, but it would not be expandable.
One thing I suggest is converting your 3100 to run OS-6, which has no known expansion limits. That isn't supported by Netgear, but since your 3100 is used, you can't get support from them anyway.
- mikeonsNov 14, 2018Aspirant
Thank you for the prompt reply, very much appreciated. With regarding to OS-6, can you please confirm that the steps at post #3 at the following link is what you are referring to?
regards,
- StephenBNov 14, 2018Guru - Experienced User
Those are the steps (particularly the 3-step version at the end). Though this might be more clear:
- BACKUP, BACKUP, BACKUP
- Download PREP4TOR6_0.1-x86 .bin
- Install it it as an add-on using the ReadyNAS web ui, and do not reboot afterwards (avoids the need to do manual factory resets)
- Download R4toR6_6.9.5 .bin
- Install it as a firmware update using the ReadyNAS web ui
- After you install the addon+firmware and reboot, it will update the firmware and start a factory default.
- mikeonsNov 14, 2018Aspirant
thank you very much. Once I receive the ReadyNAS 3100, I'll attempt these instructions and report back,
regards,
Related Content
NETGEAR Academy

Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!