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ODROID-HC4 vs Helios4

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When comparing ODROID-HC4 vs Helios4, the Slant community recommends Helios4 for most people. In the question“What are the best single-board computers for building a NAS system?” Helios4 is ranked 4th while ODROID-HC4 is ranked 9th. The most important reason people chose Helios4 is:

Has four SATA 3.0 ports so it can handle up to 48TB of storage (12TB on each SATA port).

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Common Questions

What are the best single-board computers for building a NAS system?

Pros

Pro
All the necessary features to setup a true NAS with disk mirroring

When installing OpenMediaVault with Debian it feels pretty fast for such a small thing. Easy and well documented and an active community at the software side.

Pro
Dual drive for RAID mirroring

Useful to keep your data backed up in case of single drive failure.

Pro
3.5" drive and 12V support

No extra cables necessary for 3.5" drives and plenty of power.

Pro
4 X SATA 3.0

Has four SATA 3.0 ports so it can handle up to 48TB of storage (12TB on each SATA port).

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Cons

Con
Requires 15V power supply

12V 5.5/2.2mm barrel supplies are everywhere, but it should 1up with USB C power input instead.

Con
Only one USB port and does not like power cut

Better to use a small UPS and keep a SD card with the flash boot installed.

Con
Boot button is on bottom

Makes it more difficult to access when drives are installed, as opposed to on the back, sides, or front.

Con
The project fall down

Con
No battery or UPS

A PC tailored for NAS usage should have a battery or UPS to prevent data corruption after a power loss. A tiny battery to safely shut it down would be enough.