Hi Stefan (thanks for your quick reply) and all, <my original post is below> Concerning the bootablity of the promise controller... that is excelent news, but the main problem may be the mirroring (that the promise controller should be able to do in hardware). I want to do the mirroring for reasons of redundancy. I know, that todays ide drives are less prone to hardware failure than older drives, but the box is supposed to be a locked-away-closet-box, that will be a few hundred kilometers away from me, so the system should be a able to automatically detect drive failure, so that the running system can switch all request over to the working mirror-drive transparently. I would also like to know, how i could automatically detect such a failure, so that a script can send me an email, to inform me about the failure... hint, tips, suggestions, pointers anyone? thanks already in advance best regards, Alex
Hi,
On Fri, Mar 02 2001 at 10:21 +0100, Robert Stragies wrote:
I am glad to hear about the success with the promise, althogh my setup may be more complicated...
My wish list
ide0 (onboard) NO devices ide1 (onboard) NO devices ide2 (promise) - hde: 10 gig drive - hdf: No device or a mirror of hde ide3 (promise) - hfg: No device or a mirror of hde - hdh: No device
Is it a better idea, to put the mirror-drive of hde on ide2 too, or is is better, to put it on a seperate ide-header, like ide3?
I know, i have to enable booting from offboard chipsets in the bios. I know, this is possible to do this under win with the hardware functionality of the promise controller. I am kinda sure, i can do this with linux using md-util or something similar in software, but the goal is to use the promise hardware to do this....
Stefan Troeger wrote:
Are you asking if Linux can be booted from a drive attached to ide2 or ide3? Or is mirroring the problem?
I don't know about the second question, the first one can be answered with yes, though. Just make sure your kernel supports the Promise Ultra 66---depending on what kernel you use this may require Andre Hedrick's IDE patches (you need them for non-SuSE versions of 2.2.x but not for SuSE kernels or for 2.4.x).
Then you'll have to switch some BIOS setting (in my Award BIOS it's `HDD Sequence SCSI/IDE First: SCSI'). That's it.
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