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Forum Discussion
paul-j-ghosh
Sep 28, 2025Aspirant
latest firmware for RNDP4000 (ReadyNAS Pro 4)?
What and where is the latest firmware and upgrade instructions from RAIDiator 4.2.31 for RNDP4000 (ReadyNAS Pro 4)?
potatoetoe
May 26, 2026Aspirant
StephenB I'm considering buying an old RNDP4000. Curios to know though - after you converted the OS, what capacity drives did you use? I'm looking to get around 20TB drives in raid 0
StephenB
May 26, 2026Guru - Experienced User
potatoetoe wrote:I'm considering buying an old RNDP4000. Curios to know though - after you converted the OS, what capacity drives did you use? I'm looking to get around 20TB drives in raid 0
I converted the Pro 6 quite a while ago. At the time of conversion it was 6x3TB XRAID. Not sure when I began to expand it, but at the moment it is 4x8TB+2x3TB XRAID - the 8 TB drives are a mix of WD Red Plus and Seagate Ironwolf.
This is a backup NAS for me, so I am not trying to get the most speed.
20 TB drives should work, there is no known capacity limit with OS-6. Of course you do need pay attention to the power supply capacity and temps.
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