Hacker News Reader

Comment by ihowlatthemoon | Hacker News Reader

Just in case you thought it might be a good idea to order that aliexpress thing, it's terrible. https://www.youtube.com/watch?v=3frnBoqqI_Q

View on HN

There's nothing wrong with the adapter per se, it's just that MicroSD cards have terrible random I/O performance.

I was thinking it would be cool as a small NAS with a mirror. I want to put my movies and photos on it, and having a huge mirror is very useful for that type of workload. I could drive it with a cheap ARM device, which should allow me to stream a 4k video over the network, provided my network is the bottleneck.

So yeah, I'm very much interested in this device.

Why not just use an actual 2.5" SSD instead of a bunch of SD cards in a terrible quality adapter?

At least with the SSD, you only have one microcontroller doing god-knows-what to hide the horrific reality of flash storage, vs 10 SD card microcontrollers and one on the adapter board, which are all probably even worse.

Not just performance. Reliability and data loss are also bad. All of these adapters do raid-0, which means any one card failure (very common, I have seen it a lot in my personal devices) will damage the volume.

As I have a lot of odd SD cards unused in drawers I would be more interested in these adapters if they exposed every card as its own drive so I could do ZFS, or if they did "real" raid.

good lord he's unwatchable. skip to 7:00 for something somewhat real.

Yes, he is hard to watch and they have useful information in their reviews. It's hard.

Reply on news.ycombinator.com