RAID on Tyan Tomcat K8E

Daniel Rock freebsd at
Fri Feb 24 14:10:19 PST 2006

Ashley Moran schrieb:
> On Friday 24 February 2006 16:49, Ken Gunderson wrote:
>> I have a couple of these systems.  Why would you want to use the POS
>> onboard RAID to set up a mirror when there's gmirror;-)
> Do you really think so little of on-board RAID?  Is it that board in 
> particular, or on-board RAID in general?  I feel safer somehow with anything 
> hardware based as opposed to pure software solutions.  Maybe my faith is 
> misplaced...

The onboard RAID (NvRaid) is no real RAID but relying on a device driver for 
the RAID functionality and a little help from BIOS for booting. The real RAID 
functionality lies completely inside the device driver (see 
/sys/dev/ata/ata-raid.c). So you really just have the choice between two 
different software solutions: "device ataraid" or "options GEOM_MIRROR".


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