Time Machine doesn't do External HD to External HD Live parallel backups...

I didn't know where else to post this...
I have 12GB of external storage devices attached to my MacBook Pro 17. They are a variety of sizes, and I'm trying to figure out how to use some for storage, and the rest for backing up those storage drives. I don't think Time Machine supports this...
so, I'm looking for a Time Machine styler backup software recommendation that also allows you to have live parallel backups from one external drive to another. I've checked out all the obvious things - SuperDuper, Data Backup, Backup, and others. They only support backups of the INTERNAL hard drive.
If that doesn't work, I'll have to resort to scheduled incremental back ups, but again, I can't find software that will do external to external backups.
Does anyone know of a Backup utility like Time Machine but for EXTERNAL Drives.

SFjoe1966 wrote:
I didn't know where else to post this...
I have 12GB of external storage devices attached to my MacBook Pro 17. They are a variety of sizes, and I'm trying to figure out how to use some for storage, and the rest for backing up those storage drives. I don't think Time Machine supports this...
Time Machine can back up external drives, if they're formatted HFS+, along with your internal, but only to a single volume. So unless you have one of those big enclosures that you can configure as a monster hardware +Concatenated RAID set,+ Time Machine may not be your whole solution.
so, I'm looking for a Time Machine styler backup software recommendation that also allows you to have live parallel backups from one external drive to another. I've checked out all the obvious things - SuperDuper, Data Backup, Backup, and others. They only support backups of the INTERNAL hard drive.
I don't use SuperDuper, but I'd be very surprised if it can't back up external HDs. The similar CarbonCopyCloner, which I do use in addition to Time Machine, can. But it only backs-up one volume at a time, so you'd need one "task" for each. Depending on the sizes, it could back up, say, two 500 GB disks to a single 1 TB drive (I don't know offhand if it would have to be partitioned, but that would probably be wise).
With that much data, your best bet may be a combination: Time Machine for your OSX volume and one or more externals (probably the ones with the most changes), and CCC, SD, or others for the other volumes.
You might want to review the Time Machine Tutorial and perhaps browse Time Machine - Frequently Asked Questions (or use the link in *User Tips* at the top of this forum).
Also see Kappy's post on Basic Backup, complete with links to the web sites of each product.

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