Hacker News Reader

Comment by kelnos | Hacker News Reader

> Sure you could always use hard drives and SSDs with SATA to USB adapters, but you [...] can't RAID them together, at least not without some hacks.

Why can't you RAID them together? The kernel doesn't care; all it wants to see are block devices. I recently recovered the files off a dead NAS by plugging the drives into USB adapters, and plugging those into a Raspberry Pi. RAID array assembled just fine.

View on HN

Many applications won't allow the RAID to be set up over USB devices (e.g. Open Media Vault, IIRC), because software RAID over USB is prone to flakiness.

? pretty sure Open Media Vault on Raspberry Pi could setup a RAID with 2 USB hard drives, have been using it for almost 3 years.

USB Attached SCSI is the answer: https://en.wikipedia.org/wiki/USB_Attached_SCSI

>The Linux kernel has supported UAS since 8 June 2014 when the version 3.15 was released.However, some distributions of Linux such as Ubuntu (from v11.xx onwards) have suffered from issues with the implementation of the UAS protocol.

I assumed UASP is standard now, Every USB 3.0 or > storage devices, enclosures I've bought over past 5 years have supported it but it seems some Linux distros are still having trouble.

Searching for uas under ArchLinux ARM on Raspberry Pi 3 which is booted using a SSD drive with UASP enclosure returned nothing.

Nice file recovery. Have more details? Would be a useful blog post.

Maybe they meant hardware RAID?

Reply on news.ycombinator.com