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Topic Title: 790GX (SB750) RAID in linux
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Created On: 12/06/2008 02:19 PM
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 12/06/2008 02:19 PM
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PerfectSim
Newbie

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Joined: 11/26/2008

Hi guys,

I have recently installed fedora 10 on my new pc that uses an AMD 790GX motherboard.

Could you please tell me the correct way of using the on-board RAID 5 controller? Currently although I am running in RAID mode and have set up a RAID array, fedora sees each hard disk individually.

Thank you for any help.
 12/06/2008 06:09 PM
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PerfectSim
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Ah I've discovered http://wwwd.amd.com/AMD/SRelea...OSChipset?OpenDocument a linux version of RAIDXpert, however after installing it, the service runs ok but a webpage wont open. Any idea what changes need to be made?
 12/07/2008 03:37 PM
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bnborg
Driod

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I don't know if this will help, but in the Windows version of RaidXpert, the default username and password are admin/admin.

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 12/09/2008 09:08 PM
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PerfectSim
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I decided to go with vista in the end, I hate how difficult linux can be sometimes but love its flexibility when it works, ah well.
 12/11/2008 11:14 PM
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MU_Engineer
Dr. Mu

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I would have used Linux md RAID if I were you. Using chipset/BIOS-based RAID is asking for trouble no matter the OS.

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 12/15/2008 01:16 AM
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Overmind
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Why ?
I always prefer chipset-based RAID. After all, you just set it up and it will work fine with any OS you have a driver for.

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 03/06/2009 04:50 PM
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Delwin
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I've been trying for literally weeks to find this utility.
What do I have to do to GET it? The link you posted just greets me with a page asking me to identify myself, which isn't much use since it seems to be some kind of private secure site.
I can't believe how difficult AMD is making it to get a utility that's necessary to properly configure their chips
 03/12/2009 07:03 AM
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infiltrator
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Well hardware raid is the best for performance and how most enterprises use it. Not sure why MU_Engineer would use software raid over hardware raid tbh. Software has more points of failure than hardware as it relies on the OS - whereas hardware raid doesn't.

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 03/12/2009 01:49 PM
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Mime
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Most chipset based raid setups are what's called "fake raid" where the raidy bits are handled in the chipset driver and offloaded to the CPU, so it's basically still software raid. Raid controllers that do a real hardware raid are better, but often much more expensive.

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 06/08/2009 05:57 PM
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Brane222
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IIWY I would use software RAID controller in linux kernel infrastructure.

For simple RAID-0/1/4/5/10 it's not worth mucking with extra drivers for no or even NEGATIVE gains.
It could be different story if you had a decent RAID card ( and even then it depends, especially for simple RAIDs, like 0,1 and 10), but not for that onboard c**p.

I have 7 disks in SW RAID-5 on elcheapo board with ordinary x2 6000+ and I have no problems getting 300+MB/s linear read and 200+ MB/s linear write on that array ( of oldish 500GB drives).
More than good enough for me.

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 11/26/2009 05:45 AM
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Anthoance52
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I have software RAID1 setup on two of my drives, how do I monitor it to see if any errors are occurring?

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 11/29/2009 10:44 PM
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Arwen
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Anthoance52:

Assuming you are using Linux, a simple check can be done with;

bash> cat /proc/mdstat
Personalities : [raid1] [raid0]
md1 : active raid1 hdg1[2](S) hde1[1] hda1[0]
505920 blocks [2/2] [UU]
...

You can also run "mdadm" with certain options to examine the state
of your software RAID devices. I don't recall the options at the moment.

Their is something with "mdadm" that allows continuous monitoring.
Under Gentoo Linux I think you run this command to have it start at
boot;

rc-update add mdadm default

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Arwen Evenstar
Rivendale, ME
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