RAID 0 between two 256gb SSDs, which then mirror to 1TB HDD. Possible?

[DawkinsIsGod]

I am considering this set up but I can't work out if it's possible.

I've got two 256gb SSDs (SataIII) that I want to put into a RAID 0 config. I want them to mirror to my HDD (SataII) for backup purposes. So if I lose an SSD, I can boot from my HDD whilst I get a new one.

Any help appreciated as I'm a bit new to this.

 

[getochkn]

What motherboard for the SSD's? A lot of SSD's don't allow TRIM support in a RAID. Also, the performance isn't double or anything, a lot of times only a bit faster.

As for the mirroring, you'd have to use a 3rd party software. You can't use it in the RAID at all, so basically you'd want need some backup software.

 

[noidea_77]

As getochkn said, that's no going to work! Even if it would, it would also limit the speed of the ssd's to the speed of the hdd.