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SoftRAID Volumes
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Topic starter
I have a mirrored disk on my IMac for my photos consisting of a primary and secondary disk. I use three disks so I can swap out the secondary disk every month to store it offsite. I have tried this several times but I can't figure out the proper sequence. I always wind up having to initialize the replacement disk and rebuilding the mirror (takies 3-4 hours). What is the proper sequence of steps to properly remove the current secondary disk and replace it with the older secondary disk without having to completely initialize and rebuild it? I am using Softraid Lite 5.5.5 on Mac sierra (had same problems before upgrading Mac OS and Softraid). Thanks for any help.
Posted : 13/10/2016 9:40 am
What you are most likely doing is removing the primary disk. Always remove a secondary disk when you take a disk away. Only one disk can act as the "gold master" and if that disk is removed, it can split the mirror, as with it missing, SoftRAID will choose a different disk to be the "gold master".
Your steps would be:
Create a 3 drive Mirror volume.
Set the primary to be one that you know you will keep online.
All you need to do then is remove the secondary disk you are taking off site.
Best practice is shut down when removing a disk, especially USB drives.
Then when you connect that disk again, it should automatically rebuild.
Posted : 13/10/2016 11:16 am
Topic starter
What you are most likely doing is removing the primary disk. Always remove a secondary disk when you take a disk away. Only one disk can act as the "gold master" and if that disk is removed, it can split the mirror, as with it missing, SoftRAID will choose a different disk to be the "gold master".
Your steps would be:
Create a 3 drive Mirror volume.
Set the primary to be one that you know you will keep online.
All you need to do then is remove the secondary disk you are taking off site.
Best practice is shut down when removing a disk, especially USB drives.Then when you connect that disk again, it should automatically rebuild.
I was using a two USB disk mirror, is that my problem? Should I use a three disk mirror and just remove one of the secondaries for off-site? From what you say, I only need to shut down, swap the secondary drive, and restart and the rebuild should begin.
Posted : 13/10/2016 11:42 am
That is correct. Make sure what you are removing is the secondary disk, though.
A three disk mirror gives you more protection.
Posted : 13/10/2016 11:56 am
