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  #1  
Old 11-11-2006, 09:20 AM
claude-h claude-h is offline
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Backup multiple drives to a single drive

Hello,

I wanna backup my iMac's internal and two external hard drives onto a third external hard drive.

Is this backup strategy possible with SuperDuper!? Ideally I would like to use the Smart Update feature rather than use the 'Copy Newer' or 'Copy Different' method.

Thank you very much for your help

Claude
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Old 11-11-2006, 12:10 PM
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dnanian dnanian is offline
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It's definitely possible, but don't try to do it with Copy Newer or Copy Different. Instead, simply partition the external hard drive appropriately so there's a volume there for each source. Then, copy the drives to their corresponding partition on the backup.
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Old 11-11-2006, 12:49 PM
claude-h claude-h is offline
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Thanks for your fast reply. Hadn't thought about partitioning the drive. As soon as I receive the big backup drive I will set up 3 or maybe 4 partitions and setup SuperDuper! accordingly.

Claude
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Old 11-11-2006, 12:52 PM
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dnanian dnanian is offline
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That should work just fine, Claude. Let us know how it works out.
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Old 11-12-2006, 04:13 AM
claude-h claude-h is offline
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I have another question about my backup strategy from above but isn't really SuperDuper! related, but I thought maybe you could give me your advice.

The backup drive I ordered is an IOMEGA UltraMax 640GB, which contains two 320GB drives, that can be set up either as a simple volume (Non-RAID), as a Spanned Volume (JBOD) or as a Striped Volume (RAID 0).

The capacity of my 3 drives I want to backup is as follows (real capacity in brackets):
1. iMac's internal HD: 80GB (74.4GB)
2. LaCie external FW HD: 250GB (232.7GB)
3. LaCie external FW HD: 250GB (232.7GB)

I don't know yet if the two drives in the UltraMax have a real capacity of 320GB or if it is in fact 298GB.

Initially I wanted to use RAID 0, but I guess since I have to partition the drive into 3, that wouldn't make much sense anymore, as I would end up with each partion being spread across the two drives.

I guess a Non-RAID configuration won't do me any good either because I need two 235GB partitions and one 75GB partition. If the two drives in the UltraMax have a real capacity of 320GB than I could use a Non-RAID setup but in the more likely case that the drives in the UltraMax have a real capacity of 298GB, this scenario won't work.

So I would have to use the JBOD configuration in order to achieve the backup strategy I want to use, or is my preferred method (RAID 0) still the way to go?

I'm sorry if I'm not supposed to post threads that don't concern SuperDuper! directly but I thought maybe you could clear this matter up for me.

Again thanks for your great help,

Claude
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Old 11-12-2006, 11:42 AM
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My honest advice is to not use internal striping (or spanning) at all. I just don't like striping as it basically doubles the chance of failure, and takes both "drives" (and all data) with it.

I'd rather see you get another drive that's a single mechanism unit (or is internally mirrored).
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