JDOD vs RAID 0 (SSD without TRIM, Snow Leopard)

It's a tough one to call with SSDs, so hopefully someone with the same drives can weigh in with a more specific response.

Although SSDs don't suffer the same latency issues as HDDs when it comes to random read/write, they will typically perform worse for random read/write in a RAID-0 setup, just like HDDs do, so you're right that RAID-0 may not be ideal.

However, at the same time RAID-0 gives up to double the speed when opening large files, so if you have some then I'd personally pick RAID-0 and take the slight hit on random read/write performance.


Do you definitely want extra capacity? The alternative is RAID-1, which gives you redundancy if one disk fails, but can also give potentially greater read performance (since you can read from both disks, just like you would with RAID-0), though of course at the cost of capacity. I'm not sure how well the AppleRAID RAID-1 driver runs though so that might affect how much (if any) of a performance benefit you will observe.