Mirroring a drive
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- ctrlRmB
I've just installed a second drive in my G5. How do I set it up so that it automatically mirrors the main drive?
- ctrlRmB0
Anybody?
Much much much appreciated.
- ribit0
If you mean RAID, you need to use the built-in RAID function in Disk Utility (but that requires reformatting the main drive too I think), or use Soft Raid, which has more options and doesnt require the other drive to be reformatted...
If you mean a regular mirrored incremental backup of selected stuff on the main drive, you could use something like Retrospect Backup. This is better than using RAID if you are looking for a sort of versioning system rather than the whole-disk redundancy of RAID.
- ribit0
With Retrospect you can either do a mirror 'Duplicate' which deletes changed or deleted files...
or use 'Backup' for an incremental backup (this keeps all versions of all files ever backed up, including deleted files, in the backup archive) so you can restore any file to its state on any chosen day.
- myobie0
definitely use raid...
it kills wasps like a mother...
- ribit0
oh theres also an option in 'Duplicate' to keep deleted files in the duplicate set rather than deleting them there as well.
complicated isnt it?
- ctrlRmB0
The terminology is a bit confusing. I thought raid was to write info across drives.
What I'm hoping to do is have a second drive to act as an exact duplicate of the main drive... in case one fails. Incremental versioning isn't important to me at this point.
Can I do this in Disk Utility?
- ribit0
You can setup in Disk Utility, but it may not be the best way to do it... theres other software, and in-hardware RAID solutions, like this:
http://www.lacie.com/products/pr…
- ribit0
Soft Raid:
http://www.macupdate.com/info.ph…
- ctrlRmB0
Thanks for all of your help ribit... You rule.
- ctrlRmB0
If I boot from my install disk... and declare my regular startup disk as part of a raid... Does it erase the disk?
- vburo0
i want to mirror myself.
- ribit0
I havent tried, but I imagine Disk Uitility will want to format both disks before it combines them as a volume.
- ribit0
hang on.... maybe not.
It could be similar to when a disk in a RAID set fails...you just replace the disk, and go to the RAID setup window in Disk Utility and designate the disks in the set, and hit 'Rebuild'
not sure though... Search for RAID in Mac Help, and on the Support site:
http://docs.info.apple.com/artic…