Notifications
Clear all
Topic starter
In 5.5.5 release notes is says:
New features in version 5.5.5:
• Added a work-around to SoftRAID driver to help mitigate damage to volumes caused by the Mac OS bug which causes disks to disappear from the Thunderbolt bus.
Have you really found a bug in OS X that causes disks connected via Thunderbolt to unmount? And using SoftRAID this problem might go away?
For years I've had problems with Lacie eSATA Hub that is a adapter making two eSATA ports out of a Thunderbolt connection so that disks would just unmount randomly (sometimes after minutes, sometimes after hours) making any file transfers like 1 TB file transfers fail. After days of troubleshooting years ago I've just stopped using the Lacie eSATA Hub but now my hopes went up that you maybe found an OS X bug that makes this disk unmounting happen and you can help fight that.
Can you explain what kind of bug are we talking about, what is the work-around like and if there is a word from Apple this bug will be fixed in macOS Sierra?
Posted : 01/09/2016 8:39 am
Read the FAQ on the main SoftRAID support page.
yes this is a serious problem. It happens to all kinds of hardware. It is usually tied to a specific computer, not cables/enclosures/docks, but we have found even those can trigger this issue.
No, we do not have a "fix" (disabling sleep often eliminates the problem)
What we did was a change in our driver to make sure all data gets written to the drive, to minimize/prevent data corruption when this happens!
Posted : 01/09/2016 11:29 am
Topic starter
Read the FAQ on the main SoftRAID support page.
Thanks, I did miss reading this webpage: https://srforums.wpengine.com/pages/support/faq/faq_disappearing_disks.html
I will follow the instructions at the bottom of the page and report my issue to you.
yes this is a serious problem. It happens to all kinds of hardware. It is usually tied to a specific computer, not cables/enclosures/docks, but we have found even those can trigger this issue.
I must be at the 1 of 1000 users that it's the specific computer as I've tried different eSATA enclosures, different cables and just today had this eject of drives happen even with newer USB3 enclosures connected via Belkin Thunderbolt Dock (to get USB3 connection as my 2011 MacBook Pro has only USB2). So nothing to do with the Lacie eSATA Hub that I've thought is the culprit.
No, we do not have a "fix" (disabling sleep often eliminates the problem)
I've had "Put drives to sleep" off for years, too bad.
Thanks for all this information, this really helps me understand what happens with my 2011 MacBook Pro and all the external drives. It's been years!
Posted : 02/09/2016 4:00 am
