Booting from SD card?

[no_connection]

While SD and CF cards have generally been utter garbage for any serious use (except some more specialized CF use cases) the crave for more storage in phones and tablets have had a pretty rapid development of microSD cards. Mainly when large games needed decent performance and durability to be directly loaded from the SD card.
A1 and A2 rated cards shuold have decent performance.
And the write endurance of those "extra endurance" cards for dash cam seem to be quite a lot.

Not only for TN but other OS as well, have any one tested for example the Samsung EVO latest generation?

 

[Arwen]

I use a MicroSD card as alternate boot / recovery media for my miniature media server, which uses ZFS. It works and I can boot off it if needed, with full but slower, functionality. I don't remember the brand, but it could be a 4 year old Samsung.

However, I would not consider booting a 24 x 7 server that uses ZFS on such a device.


Further, most server system boards don't have a SD / MicroSD or CF slot. So you would have to add a USB flash card reader. Which is worse than simply using a high quality USB flash drive. Or 2 in a mirror. Unless you plan on running some misc. system board that has a SD / MicroSD or CF card reader builtin.

Remember, the OS space for TrueNAS needs to be 16GB to 64GB, depending on how many backup boot environments you plan to keep available. I would doubt that under provisioning of SD / MicroSD or CF card(s) is supported.