Subject: Re: Promise IDE Raid Controllers
To: Thomas Michael Wanka <>
From: Manuel Bouyer <>
List: netbsd-users
Date: 07/03/2000 16:47:25
On Mon, Jul 03, 2000 at 03:15:07AM +0200, Thomas Michael Wanka wrote:
> Hi,
> Promise will be shipping two ATA/100 raid controllers, one samiliar to the 
> Fasttrack66, another one will probably have a i960 CPU and 4 IDE 
> channels/conectors. If someone is interested to write support I will try to get 
> some controllers and information from Promise although they seem to be a 
> little bit sensible about the internals of their products (their linux driver should 
> be neither open source nor available as source).

If you can get me the boards and docs I'll try to support them.

> I do not know if it is worth 
> the work, as by next year Serial ATA should be available. 
> I was interested if someone has compared the IDE Raid controllers to 
> software raid, some time ago there was a database test (Informix and Oracle I 
> think) run on SCSI raidcontroller systems and softwareraid under Linux, these 
> tests indicated that the softwareraid was almost on par with the SCSI Raid 
> controllers.

Most "IDE RAID" controllers are standart PCI IDE, the RAID is done in
software. A board with a i960 CPU will probably do it in hardware, though.

Manuel Bouyer, LIP6, Universite Paris VI.