Is this a sound plan

As mentioned in a recent thread, I'm not able to backup one external drive to another external drive via Time Machine due to improper formatting of the external drives. Here's my proposed solution without buying third party backup software or additional external drives. Is it technically sound? Is it too risky in terms of potential data loss?

Here's what I have.
Backup Drive - contains computer backups over the last couple of years.
RAW drive - contains 90% of my RAW photos.
Hard drive - contains LR5 and 10% of raw images. (Computer hard drive is too small to hold all raw images.) late 2008 Macbook pro.

I plan to move data around as follows to allow me to properly format the Toshiba v73600-c drives.
1. Backup computer onto RAW drive.
2. Format Backup drive to HFS+ Journelled
3. Via LR5, move RAW files from RAW drive to Backup drive
4. Backup computer on Backup drive
5. Format Raw drive HFS+ Journelled
6. Via Time Machine, backup Raw drive

Sounds like a good plan.
Don't forget you can partition blank drives to different formats.

You list that each of your drives are journaled.
That can Fat32 or ExFat as well for dual use.

I have 100gb's partitioned to journaled on my external 2tb
The rest is formatted to ExFat to allow for larger files.

My system may be simpler than yours.

Thanks. I should have mentioned that I have no knowledge of the different formatting types. I just noted that I would use journaled because someone else suggested it to me in another thread.

I have no plan to partition. I don't have a clue what benefits it would have.

It seems you have answered your own question and made up your mind.
I think you have a solid plan.
Best of luck to you.

How old is the external drive? Sometimes it would be best to get a new drive if it is an older drive.

I started to implement my plan, but on step 1 Time Machine notified me that my RAW drive wasn't set up for Time Machine. I was scared I'd lose my images if I moved forward. So I bought a 2TB drive yesterday, but will still use the two year old 1TB drives. Was thinking of partitoning the 2TB drive, but not sure how or what advantages are. Current thinking is I'll use the 2TB drive for computer backup; use a 1TD drive for RAW and use the second 1TB drive for RAW backup.

No backup plan is a bad backup plan. Non-corrupted data backups are always a good thing. I have 3 2 TB drives with the same data. You can always up load it to a online service, I heard if your a Prime member it unlimited storage is free.

kipliq wrote in post #17890903
No backup plan is a bad backup plan.

What makes you think that I don't have a plan. I just bought another external drive.
Ill admit that I don't have confidence in computer skills when it comes to going behind the scene, if you will.

I did not say you did not have a plan, its a statement in general. Having any plan is better then none at all!

kipliq wrote in post #17891854
I did not say you did not have a plan, its a statement in general. Having any plan is better then none at all!

No, it's not. A backup plan that doesn't enable you to restore your data creates a false sense of security. Restore tests are an essential part of any backup plan worth having.

I'm a server admin so I assume everyone know that backup/restoration goes hand in hand.

kipliq wrote in post #17893477
I'm a server admin so I assume everyone know that backup/restoration goes hand in hand.

I'm a solution architect, and I help a lot of professional photographers with technical stuff as a side business. Most photographers have little to no clue about technology.

kipliq wrote in post #17893477
I'm a server admin so I assume everyone know that backup/restoration goes hand in hand.

tim wrote in post #17893513
I'm a solution architect, and I help a lot of professional photographers with technical stuff as a side business. Most photographers have little to no clue about technology.

unfollowing my own thread. it's taken a nose dive.

I've found someone new for my ignore list...

For what it's worth to anyone, this is how my problem was solved. Purchased Paragon's NTFS for Mac 14 software for $20. This utility allowed my macbook to communicate with the raw files that were on the external drive. I'm moving those files, via Lightroom 5, to a properly formatted OS X external drive.