[CentOS] IHC7 RAID-1 or Kernel Software RAID-1?

William Warren hescominsoon at emmanuelcomputerconsulting.com
Tue Jul 17 22:49:50 UTC 2007

use only the linux software raid.  It's perfectly stable even under high 
loads here.

Tony Mountifield wrote:
> I'm just setting up a SuperMicro system which has twin SATA disks on an
> Intel IHC7 RAID-capable controller.
> The system came with Fedora 5 pre-installed, which I will be removing and
> replacing with CentOS 4.5. But before doing so, I've been having a look at
> how the original vendor configured it.
> When I've built systems previously, I've disabled any RAID controller and
> used kernel software RAID-1, set up per-partition, and this has worked
> well.
> This system is currently set up with hardware RAID enabled, which is
> detected by the kernel device mapper. I can see what it has found using
> "dmraid" with -b, -r and -s. A single physical volume was created
> on the mapped RAID-1 device, and then logical volumes created on that.
> My question is: which kind of configuration will generally give me better
> performance? To use the IHC7 RAID-1 as currently set up, or to use Linux
> software RAID-1 as I am used to doing? Any other reasons to choose one
> over the other?
> Thanks in advance for any insights.
> Cheers
> Tony

My "Foundation" verse:
Isa 54:17  No weapon that is formed against thee shall prosper; and 
every tongue that shall rise against thee in judgment thou shalt 
condemn. This is the heritage of the servants of the LORD, and their 
righteousness is of me, saith the LORD.

-- carpe ductum -- "Grab the tape"
CDTT (Certified Duct Tape Technician)

Linux user #322099

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