Early '08 MBP and SSD Raid0 - nonsense ?

[barmann]

My Macbook Pro from early 2008 only has a SATA I connector for the harddrive, limiting its max. speed for SSDs to about 150 MB/s , rather less than that.

Now I have an Optibay clone to replace the DVD drive with a 2nd HDD, which is connected via aSATA/ IDE adapter .

With two SSDs in Raid 0, what max: speed could I expect, considering I'd be pairing one SSD on SATA I with one SSD on the IDE connector ?

 

[alust2013]

Don't expect great speeds, as the IDE controller will be the bottleneck

 

[miata]

I recall reading about somebody else doing this and getting some benefit over the non-RAID 0 configuration. The nice thing about RAID 0 is that you can use it to get more capacity from 2 smaller SSD drives.

 

[Stvwndr219]

Don't expect great speeds, as the IDE controller will be the bottleneck

This. It won't be a true raid 0 because it is bottlenecked by the IDE interface but you should still see increases in speed because 1. it's an SSD 2. you have RAID 0 with a lower bottleneck.

 

[barmann]

Thanks for your replies , appreciate it.

I'm getting about 110/125 MB/s read/write (AJA test) with a single SSD (OWC 60GB), would it be reasonable to expect a little over 200MB/s for both values in a Raid0 ?

Or maybe I should just put it on ebay and get an unibody ...

 

[Stvwndr219]

Wouldn't hurt to just try it out; if it works, it works - if not, you can go your second route

 

[miata]

My Macbook Pro from early 2008 ...
Now I have an Optibay clone to replace the DVD drive with a 2nd HDD, which is connected via aSATA/ IDE adapter .

...

BTW, I also have an early 2008 MPB at is 15." Which Optibay clone did you get? (Found the eBay Link in another of your posts.)

I have a pair of TravelStar 320 7200 RPM drives for boot and external mirror. When I get an upgrade in another couple of months I've been considering putting both drives in a the laptop to use as another desktop for the family. I would partition the drives and create a fast and faster RAID 0 group on them. I'm assuming that the bay has the PATA to SATA adapter. Right?

 

[barmann]

BTW, I also have an early 2008 MPB at is 15." Which Optibay clone did you get? (Found the eBay Link in another of your posts.)

.... I'm assuming that the bay has the PATA to SATA adapter. Right?

Yes, that's correct, Sata HDD to PATA drive bay adapter .