Re: SATA raid controller on Asustek's P5M2-M

[Josh Paetzel]

On Monday 04 February 2008 09:43:56 am Leonid Satanovsky wrote:
 Hello, people!
 Does anybody know whether the SATA raid controller on Asustek's P5M2-M
 motherboard is supported by FreeBSD 6.3 ... or 7.0?
 --
 We are choosing a motherboard for a low-end mail server (this is a small
 company with lots of mail,... and the host will also serve as Internet
 gateway... that's the strange configuration -) ) )
 --
 Thanks in advance!
 Best regards,
 --les

My experience with the onboard BIOS RAID of various motherboards has been 
horrific.  I'd suggest one of two paths, depending on the RAID configuration 
you're going for.

If you strictly doing mirroring check out gmirror.  If you are planning on 
some sort of striping and want boot support think about populating one of the 
8x PCI-e slots in the board with a RAID controller.  I've had good luck with 
the highpoint 23xx and 3ware 9650s, I'm sure there are other well supported 
options as well.

If you really need boot support and striping but costs are so touchy that you 
can't afford a RAID controllre I'd boot the thing off USB and use 
gstripe+gmirror before I used the motherboard RAID.  It's that bad.


-- 
Thanks,

Josh Paetzel

PGP: 8A48 EF36 5E9F 4EDA 5A8C 11B4 26F9 01F1 27AF AECB


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Re: SATA raid controller on Asustek's P5M2-M

[Wojciech Puchar]

My experience with the onboard BIOS RAID of various motherboards has been
horrific.  I'd suggest one of two paths, depending on the RAID configuration
you're going for.


you well called it BIOS RAID. because it is actually completely normal 
hardware, just with crappy software RAID in BIOS.


gmirror, gstripe is software RAID, gconcat is useful too, all is much 
better and is portable (you may move that disks to any other controller).


and you may gmirror partition, not whole drive.

for booting it's best to create small boot partition.
as it's not much space i usually create boot partition on every disk so it 
can boot with disks swapped, missing etc.


it's just important to make boot partition as a.

example of my /boot/install.sh which i run every time i change anything in 
/boot on 6 disk system:


#!/bin/sh
for x in ad10a ad12a ad14a ad16a ad18a ad20a ;do
 newfs -m 0 -i 32768 -b 16384 -f 2048 /dev/$x
 mount /dev/$x /root/mnt-boot
 cp -pR /boot /root/mnt-boot
 umount /root/mnt-boot
done


replace /root/mnt-boot with something else if prefered.


please don't ask me how to do it with sysinstall. the answer is impossible 
or very difficult like temporary install without gmirror, boot partitions 
and copying.


best way is to use liveCD/DVD and do manual install.


is there anywhere manual-install-howto? if not i could write it having a 
bit of time.

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