Clean Install / Cloning to an second internal drive?

My boot drive is full and now seems slower - is it file fragmentation which slows a full drive?
Here's my set up - I've just added a second internal 1TB drive and want to clean install the original boot drive (350gb) which is almost full and seems to have slowed down. - What is the best way to do this?
Can i clone to a second internal drive?
Can i clone drive 1 onto drive 2 then clean install drive 1?
I want to keep a back up of system set up, software preferences etc.. so nothing goes wrong
Can i then use Migration Assistant to get everything back in place on drive 1 (software preferences etc..)
Then drop the folders in from drive 2 into 1 - then erase drive 2 to start fresh
(I'm running OS 10.5.8)
Thanks for any help

Hi
Yes you can use it as a regular drive. Store Data or even install the OS.
RAID 0 = Stripe. As an example 2x1TB drives striped will give you a single volume 2TB in capacity or thereabouts. RAID 0 gives you capacity and performance with no redundancy. If one of the drives fails you lose everything. Data is 'striped' across both drives. One drive does not get 'filled' up first before data is stored on the second drive.
It's important therefore with a RAID Stripe to have a clear and well-thought out backup strategy if you want to protect your data.
RAID 1 = Mirror. As an example 2x1TB mirrored would give you a single volume 1TB or thereabouts in size. RAID 1 gives you redundancy at the cost of capacity and performance. If the primary mirror fails the data is still on the secondary mirror allowing you time to replace the failed mirror. Data would then be 'mirrored/copied' again onto the replacement drive. Depending how much data you have this can take some time. Performance does suffer whilst this happening.
Depending on your hardware and how far you want to take this there is a whole world of RAID waiting for you to explore. If you had a MacPro for example you could use 4x1TB drives and have a RAID 10. A Mirror of a Stripe or - if you like - a Stripe of a Mirror. Either way you end up with a 2TB Volume giving you some measure of performance with redundancy. Beyond what's available built-in you're really looking at hardware RAID solutions. These can offer RAID 5 and RAID 6 with variations thereof. For example RAID 5 with hot spare etc or RAID 3 or even RAID 50 and so on.
The 'general rule' leaving 10% free if anything should be expanded to 15% if you're considering RAID. Performance degrades alarmingly once you get beyond that figure even more than un-RAIDed volumes.
HTH?
Tony

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List of references:
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Clean Install / Cloning to an second internal drive?

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