ICH5R, ICH7R or Promise PDC20378 RAID?
hakmi at rogers.com
Tue Jun 20 18:27:02 UTC 2006
> 1) With the Promise controller, after simulating a disk
> problem (shutdown - disk disconnection - reboot - shutdown -
> disk reconnection - reboot), I wasn't able to rebuild the
> array at all, either with "atacontrol rebuild ar0" or from
> the bios. I suspect a spare disk is necessary for a complete rebuild.
> 2) With the ICH5R controller, installation went fine too. If
> I disconnect a disk, the system still boots, but when I plug
> the disk back (computer shut down), no boot is possible
> anymore. At boot, a kernel panic says:
> "softdep_setup_inomapdep". No array rebuild is possible from
> the bios, so I'm stuck.
> I use freebsd 6.1 RELEASE, with the latest BIOS for the
> motherboard, and
> 2 SATA 1.0 Western Digital 160GB disks. I'm trying to
> configure RAID 1.
> I'm surprised I have so many problems. Am I doing anything
> wrong? With INTEL hardware controllers for SCSI disks, I
> never had any problems until now. Does anyone successfully
> use another ASUS board, and is able to rebuild the array,
> without rebooting?
Few things I noticed about the on-board Promise chipset on ASUS that it is very poorly designed. If you do the unplug/replug test, it most likely won't work, you need to use a spare drive or re-format the drive and then replug it.
It also goes out of sync very often, so you want to make sure you're running consistency checks at least once a month.
Sometimes when one of the RAID-1 drives develops bad sectors, the whole array won't boot until you unplug one of the drives, and plug a spare one.
My conclusion, if you need something stable, don't use the onboard raid, get a RAID card even the cheap ones will do better job!!
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