How to make your own Fusion Drive
Posted 15 November 2012 - 04:14 AM
Posted 15 November 2012 - 05:05 AM
Not quite the only.
Bear in min that when (and not if) either drive ges flooey it's 'Arrivederci' to ALL that they had until that moment contained.
Posted 15 November 2012 - 05:28 AM
That's true for any drive that isn't part of something like raid 5 or a Drobo, etc.
Posted 15 November 2012 - 05:29 AM
I tried restoring from a backup to our homebrew Fusion Drive, and although it worked, during startup some funky stuff happens every time. After that the system works normally though.
There's directions on our YouTube video page on how to delete the Core Storage volume and go back to 2 independent drives.
Posted 15 November 2012 - 05:51 AM
Personally, my vote is for a non-fusion setup.
Keep the two drives working independently. Have an SSD as a primary drive. Partition the hard drive (or second SSD) where one partition becomes bulk storage and the other becomes your backup of your primary drive.
That way you at least have some redundancy.
Posted 15 November 2012 - 06:52 AM
The plugs to machack's articles indicate there is not an indication of smart use of the SSD storage for commonly used files... Has anyone from MacWorld been able to verify the OS will move commonly used files to SSD for faster read access?
Posted 15 November 2012 - 07:01 AM
My setup is about the same as yours (my SSD is in the main position, and a 750GB in the optical space). I booted from an external drive running Mountain Lion 10.2, and set up the logical volume as described above. Restoring from Time Machine was fairly straightforward. I did that during the initial setup after installing Mountain Lion, and once it was complete I had my desktop back, etc.
I also "un-fusioned" the drives. The first command-line entry (diskutil coreStorage create myLogicalVolGroup /dev/disk1 /dev/disk2) can be performed on individual drives, using just disk1 or disk2. Give them separate names, of course. I also had to run a command-line format before Disk Utility would see the volume, but I did not use "/dev/" in the disk assignment, so perhaps that was my problem.
Posted 15 November 2012 - 07:07 AM
You want to take two drives, which are backed up both individually to a Time Machine, then make a Fusion Drive with the two drives and restore both Time Machine backups to the same Fusion Drive?
Posted 15 November 2012 - 07:16 AM
Nice to have the options and look forward to hear what other folks are doing.