I apologize in advance for the length of this question; I'd really like to provide the exact details of what the configuration is, in case it's relevant.
In summary, I'm getting the error "An unexpected error occurred (error code -50)." when trying to write to disks, but reading from them is fine. A reboot solves the problem temporarily.
I recently bought two RoseWill dual-bay JBOD USB enclosures and put two WD Green drives in each. Since it's JBOD, each enclosure just shows as two disks, so the OS sees four disks coming through two USB ports. Let's call them Enclosure 1 and 2 (E1 & E1), each having Disks 1 & 2 (D1 & D2), so I have:
E1D1 - Enclosure 1, disk 1
E1D2 - Enclosure 1, disk 2
E2D1 - Enclosure 2, disk 1
E2D2 - Enclosure 2, disk 2
I manually maintain E1D1 and E2D2 as mirror images of each other, and E1D2 and E2D1 as mirrors, so the enclosures are basically mirrors of each other, with the primary disk (D1) being the one I access.
The drives contain videos and I use Plex as the media center software. Plex is set to read from E1D1 and E2D1 only, while the other two (E1D2 and E2D2) are just backups. Everything works fine, for a while.
After a few hours or so, the disks are no longer writeable. I can still read from them, but any write action generates the error noted above.
This error happens on BOTH E1D1 and E2D1, so it's in both enclosures on two separate disks, with completely different files on them. I switched Plex to read from E2D2 instead of E1D1 (since they're identical, but in different enclosures) and the exact same problem happens but on different disks, so now E1D1 reads/writes just fine while E2D2 stops writing after a while. With that, it seems that it's not a disk or enclosure problem (at least not bad hardware).
I used two separate USB drives before, but each had a dedicated USB port. I've had this setup for about 18 months and never had any problems until switching to the new enclosures. I've searched the web and the only things I find is things saying the disk is probably bad, but it seems unlikely given the issue happening on only the "active" disks and spanning three disks.
This is just a basic Mac Mini, FYI.
I'm not sure what to look for in the console or logs; I'm still learning the details of OS X. I'd be happy to post any logs or other information requested.
Thank you for your time.
In summary, I'm getting the error "An unexpected error occurred (error code -50)." when trying to write to disks, but reading from them is fine. A reboot solves the problem temporarily.
I recently bought two RoseWill dual-bay JBOD USB enclosures and put two WD Green drives in each. Since it's JBOD, each enclosure just shows as two disks, so the OS sees four disks coming through two USB ports. Let's call them Enclosure 1 and 2 (E1 & E1), each having Disks 1 & 2 (D1 & D2), so I have:
E1D1 - Enclosure 1, disk 1
E1D2 - Enclosure 1, disk 2
E2D1 - Enclosure 2, disk 1
E2D2 - Enclosure 2, disk 2
I manually maintain E1D1 and E2D2 as mirror images of each other, and E1D2 and E2D1 as mirrors, so the enclosures are basically mirrors of each other, with the primary disk (D1) being the one I access.
The drives contain videos and I use Plex as the media center software. Plex is set to read from E1D1 and E2D1 only, while the other two (E1D2 and E2D2) are just backups. Everything works fine, for a while.
After a few hours or so, the disks are no longer writeable. I can still read from them, but any write action generates the error noted above.
This error happens on BOTH E1D1 and E2D1, so it's in both enclosures on two separate disks, with completely different files on them. I switched Plex to read from E2D2 instead of E1D1 (since they're identical, but in different enclosures) and the exact same problem happens but on different disks, so now E1D1 reads/writes just fine while E2D2 stops writing after a while. With that, it seems that it's not a disk or enclosure problem (at least not bad hardware).
I used two separate USB drives before, but each had a dedicated USB port. I've had this setup for about 18 months and never had any problems until switching to the new enclosures. I've searched the web and the only things I find is things saying the disk is probably bad, but it seems unlikely given the issue happening on only the "active" disks and spanning three disks.
This is just a basic Mac Mini, FYI.
I'm not sure what to look for in the console or logs; I'm still learning the details of OS X. I'd be happy to post any logs or other information requested.
Thank you for your time.