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I recently migrated my NAS from a Mini-ITX mainboard to a mini PC. Although there are m.2 cards with multiple SATA ports on board, they would require either to

I recently migrated my NAS from a Mini-ITX mainboard to a mini PC. Although there are m.2 cards with multiple SATA ports on board, they would require either to keep the PC open or mount it into a bigger case with multiple disks bay. I chose instead a more costly but potentially more stable solution with a IcyBox IB-3780-C31 enclosure (8xSATA to USB3.1) which is well supported by either Linux and FreeBSD, which is important as I use XigmaNAS. The mini PC I used was the only one with a USB3.1 port on board CPU is a N5105 which is more than enough for 4 ZFS mirrors. Feel free to ask if you need more information.

hollerith 3y ago
I've lost data by having as my home directory an external drive connected via USB (on an ext4 file system). Then I found a comment on this site saying that Linux's USB driver is known to be unreliable when layering a file system (terminology?) over it.
- transpute 3y ago
  In theory, USB could be avoided with DIY JBOD: - Thunderbolt to NVME M.2 enclosure - M.2 to SATA breakout Or: - Thunderbolt to NVME M.2 enclosure - M.2 to PCIe slot - LSI HBA PCIe card to SATA
  - hollerith 3y ago
    What I do is I keep using the same (Samsung T7) external drive I lost the data on, but now I use it only to transfer data from one computer's internal drive to another computer's.
- jcrawfordor 3y ago
  these types of enclosures are going to be using UAS, USB attached SCSI, which is relatively new. It should deliver a more reliable and manageable experience for external drive enclosures in general (e.g. proper addressing of which drive you want to talk to). If nothing else it's a different code path though. I've been using a multi-drive UAS enclosure over USB3 as the storage for a VMS for some time, it feels a little weird given USB's history but it has been very reliable and easily saturates the drives from a bandwidth perspective. I'll probably go the same route for bulk storage in the future, since it's a lot easier to get small machines with USB than small machines with 4+ SATA channels.
  - Bagged2347 3y ago
    Which UAS enclosure are you using? Would you recommend it? Any quirks to know about?
    - jcrawfordor 3y ago
      I use https://www.startech.com/en-us/hdd/s352bu313r https://www.startech.com/en-us/hdd/s352bu313r The internal RAID is neat and I used it for a while, but lately I've had it configured as a JBOD and I let the VMS manage which drive it puts things on. But probably the best thing to do would be to configure it as JBOD (it has DIP switches to choose the mode) and use it with whatever software volume manager you prefer, lvm or btrfs or whatever.

hollerith 3y ago

I've lost data by having as my home directory an external drive connected via USB (on an ext4 file system). Then I found a comment on this site saying that Linux's USB driver is known to be unreliable when layering a file system (terminology?) over it.

transpute 3y ago
In theory, USB could be avoided with DIY JBOD: - Thunderbolt to NVME M.2 enclosure - M.2 to SATA breakout Or: - Thunderbolt to NVME M.2 enclosure - M.2 to PCIe slot - LSI HBA PCIe card to SATA
- hollerith 3y ago
  What I do is I keep using the same (Samsung T7) external drive I lost the data on, but now I use it only to transfer data from one computer's internal drive to another computer's.
jcrawfordor 3y ago
these types of enclosures are going to be using UAS, USB attached SCSI, which is relatively new. It should deliver a more reliable and manageable experience for external drive enclosures in general (e.g. proper addressing of which drive you want to talk to). If nothing else it's a different code path though. I've been using a multi-drive UAS enclosure over USB3 as the storage for a VMS for some time, it feels a little weird given USB's history but it has been very reliable and easily saturates the drives from a bandwidth perspective. I'll probably go the same route for bulk storage in the future, since it's a lot easier to get small machines with USB than small machines with 4+ SATA channels.
- Bagged2347 3y ago
  Which UAS enclosure are you using? Would you recommend it? Any quirks to know about?
  - jcrawfordor 3y ago
    I use https://www.startech.com/en-us/hdd/s352bu313r https://www.startech.com/en-us/hdd/s352bu313r The internal RAID is neat and I used it for a while, but lately I've had it configured as a JBOD and I let the VMS manage which drive it puts things on. But probably the best thing to do would be to configure it as JBOD (it has DIP switches to choose the mode) and use it with whatever software volume manager you prefer, lvm or btrfs or whatever.