RAID 0 / Stripe question regarding controller ATA100 and ATA133 speeds.

[Cheetah8799]

ok, my current setup is a Promise FastTrak100 TX2 PCI raid controller. It operates at ATA100 speeds. I have 2 Seagate 80gb ATA100 7200rpm 2mb cache drives. When I've tested my stripe using HDTach, it reports that the stripe runs at the full 100 speed. When testing a single ATA100 drive on the motherboards IDE controller it was far lower, like 60ish, which is expected.

Now, I'm wondering if I were to upgrade my IDE raid controller to an ATA 133 model, like this one, would I get the full ATA133 speed with the same ATA100 drives? Or would it still be limited to a max of 100? The reason I'm thinking I could get 133 speeds is because it would be setup as a stripe, so as Promise says, it would "double" the speed... marketing, I know, but I'm thinking maybe I could get the full 133.

Anyway, anyone have any past experience with this that can help me figure this out?

 

[Matthias99]

Originally posted by: Cheetah8799
ok, my current setup is a Promise FastTrak100 TX2 PCI raid controller. It operates at ATA100 speeds. I have 2 Seagate 80gb ATA100 7200rpm 2mb cache drives. When I've tested my stripe using HDTach, it reports that the stripe runs at the full 100 speed. When testing a single ATA100 drive on the motherboards IDE controller it was far lower, like 60ish, which is expected.

Now, I'm wondering if I were to upgrade my IDE raid controller to an ATA 133 model, like this one, would I get the full ATA133 speed with the same ATA100 drives? Or would it still be limited to a max of 100? The reason I'm thinking I could get 133 speeds is because it would be setup as a stripe, so as Promise says, it would "double" the speed... marketing, I know, but I'm thinking maybe I could get the full 133.

Anyway, anyone have any past experience with this that can help me figure this out?

A RAID0 of two drives each capable of ~60MBps transfer should give ~120MBps transfer if unrestricted by anything else. An ATA133 controller should give you a higher transfer rate than an ATA100 controller here. Each drive in the controller is generally on an independent channel, and no single drive will be constrained by its own ATA100 speed.