[CentOS] Re: Anaconda doesn't support raid10

Thu May 10 20:10:45 UTC 2007
Ross S. W. Walker <rwalker at medallion.com>

> -----Original Message-----
> From: centos-bounces at centos.org 
> [mailto:centos-bounces at centos.org] On Behalf Of Ruslan Sivak
> Sent: Thursday, May 10, 2007 3:44 PM
> To: CentOS mailing list
> Subject: Re: [CentOS] Re: Anaconda doesn't support raid10
> Ross S. W. Walker wrote:
> >> How would I know if my system is using NCQ?  I think my 
> >> drives and card 
> >> should support it.
> >>     
> >
> > Get the controller make/model and look it up, then get the drives
> > make/model and look it up. If they both support NCQ then you should
> > be good.
> >
> > While your there get the sustained data transfer rate, total read
> > seek time (includes rotational latency) and total write seek time.
> >
> > -Ross
> >
> >   
> I can get all that data, but can I actually test it somehow?  
> Does linux 
> know anything about NCQ, or is everything abstracted to the 
> controller?

Good question, not knowing the answer I did a quick google and this
came to the top:


another good one,


Looks like support wasn't added until 2.6.18 and isn't widely
supported until 2.6.19 and 2.6.20.


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