You need at least 2 TB SSD in order to run a Full Ethereum node. Again, there is no chance of syncing the blockchain with an HDD disk.
NanoPC T4, Rock 5B and Orange Pi 5 plus
These boards includes 4x M.2 2280 NVMe disk support.
Orange Pi 5
This board includes 1x M.2 2245 NVMe disk support.
Raspberry Pi 4
You will need an SSD to run an Ethereum node (without an SSD drive there’s absolutely no chance of syncing the Ethereum blockchain). There are 2 options:
Use an USB portable SSD disk such as the Samsung Portable T5 SSDs.
Use an USB 3.0 External Hard Drive Case with a SSD Disk. In our case we used a Startech SATA to USB Cable. Make sure to buy a case with an UASP (USB Attached SCSI) compliant chip, particularly, one of these:
We strongly recommend Startech SATA to USB Cable if you are using a UASP bridge:
In all cases, avoid getting low quality SSD disks as it is a key component of your node and it can drastically affect the node performance (and sync times). Keep in mind that you need to plug the disk to an USB 3.0 port (in blue).
Remember that the Raspberry Pi 4 can barely run a node after The Merge. Choose a board from the above list if possible.