Promise FastTrak 100 onboard ATA RAID controller

Alexander E. Patrakov semzx at
Wed Jul 2 00:34:30 PDT 2003

This thingy at least pretends to work now in 2.4.21 (it didn't in 2.4.20, the 
kernel hang after printing the models of drives connected to it). The 
question is how to use it properly.

Variant 1: Don't use it at all. Use "md" software RAID on main IDE interfaces 
(they are ATA133, but there is also a not-so-often-used CD-RW attached to one 
of them), as we do now.
Variant 2: Move the disks to the Promise controller (ATA100, but no CD-RW), 
use the same "md" software RAID.
Variant 3: Move the disks to the Promise controller and use the pdcraid driver 
(it has version 0.03 beta, I am not sure that it is stable enough).

Another couple of questions: How do I know if one of the mirrored hard drives 
fail, for each variant? Can I replace a disk with a disk of higher volume in 
the case of failure?

Any other comments on this piece of hardware are welcome.

Alexander E. Patrakov

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