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Date:      Sun, 7 Jul 2002 15:47:37 +0200
From:      Mark Rowlands <mark.rowlands@minmail.net>
To:        thrawn@linux.nu, freebsd-questions@FreeBSD.ORG
Subject:   Re: Raid on mylex dac960pg and ami 428 raid cards
Message-ID:  <200207071547.37664.mark.rowlands@minmail.net>
In-Reply-To: <20020707033240.A274@thrawn.birch.se>
References:  <20020707033240.A274@thrawn.birch.se>

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On Sun July 7 2002 03:32, thrawn@linux.nu wrote:
> Hi,
>
> I have a machine with 3 x 9 gb scsi discs, Its a mylex controller. Here=
 is
> my dmesg:
>
> mlx0: <Mylex version 4 RAID interface> mem 0xe3000000-0xe3001fff irq 10=
 at
> device 10.1 on pci0 mlx0:  *** WARNING *** This firmware revision is no=
t
> recommended
> mlx0:  *** WARNING *** Use revision 4.06 or later
> mlx0: DAC960PG, 1 channel, firmware 4.04-0-00, 4MB RAM
> mlxd0: <Mylex System Drive> on mlx0
> mlxd0: 8680MB (17776640 sectors) RAID 5 (offline)

Always take a backup of the raid configuration and the data before you do=
=20
anything!

Update the firmware and bios  :-)

http://www.mylex.com/pub/support/current_raid/fw_pgpj.EXE

> I know that there is 3 x 9 scsi discs on it but the config is set up as
> this, see above. But there is no bios on this card and I have to set up=
 the
> array in w2k. I guess that?=20

Nope.

> Any way I have installed a junk w2k
> installation for this so that, I can setup the array and the partion It=
 in
> FreeBSD, As I only intend to run raid 0 on this tree discs. But Im
> woundering if there is any way of doing this in FreeBSD? Or I have to d=
o it
> from w2k, I have not fixit it to work with my controller in w2k. Any wa=
y it
> is no an 100 % FreeBSD question. Im only woundering if it is possibel t=
o do
> it in FreeBSD? With out w2k that is.

My usual procedure is create a dos boot diskette and run the mylex=20
configuration utility=20
(http://www.mylex.com/pub/support/current_raid/ezassist.exe) and create t=
he=20
raid array within that. On some cards you have the option to press F2 (is=
tr)=20
and configure from the cards bios but I have had problems with that in th=
e=20
past.

> In a other machine I have a AMI MegaRAID card and its working perfectly
> with 2 18,4 gb scsi discs. How ever I have get my hands on two extra 18=
,4
> gb scsi discs and I want them to join the array. So Im woundering if th=
ere
> is any way of doing it from FreeBSD? Or I have to do it from w2k?=20

The array is a function of the scsi card, not Freebsd or Win2k, although =
see=20
man vinum and http://www.vinumvm.org/vinum/ for how to setup virtual arra=
ys=20
within freebsd. In short, it depends on the card.

> So far I
> have not got very far yet, but I trying. I Have a w2k install on a junk
> disc. I think it should be possible to join 2 discs to an array. Here a=
re
> some info from my array and card from dmesg:
>
> amr0: <AMI MegaRAID> port 0x9400-0x947f irq 2 at device 9.0 on pci0
> amr0: <Series 428> Firmware UF82, BIOS 1.61, 32MB RAM
>
> amrd0: <MegaRAID logical drive> on amr0
> amrd0: 35000MB (71680000 sectors) RAID 5 (degraded)
>
> And one last question why is my id 1 on cable one device getting degrad=
ed
> all the time when I reboot my system or have hade it shutdown for some
> time?

difficult to have a raid 5 setup with only two disks..........

> I can provide more info if needed, It might have something to do with
> interferance or something smilare ? But I can have something to do what=
 I
> did not have a clean shutdown?
>
> The last question is how do I avoid a device to not get degraded?

don't remove one of the disks from a raid array

> Thanks for your time to read this email even if you don't answer it.
>
> Mvh Mattias  Bj=F6rk
>

And always take a backup of the raid configuration and the data before yo=
u do=20
anything!



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