On 7/8/2005, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote:



>In continuation of "raidctl -P all in /etc/rc" theme.

>

> Please, can you explain what difference between RAID mirroring and

>CCD mirroring?

>

> I see that RAID have reconstruction option, and trace parity

>condition. In the other side, it need to "raidctl -P all" and wait for

>it before start system. I read ccd(4), ccdconfig(4), but they are not

>describe what I want to know.



Not sure what you mean.



>

> And, briefly, what difference between RAID and CCD in such fields

>like "performance", "what to do after one disk fail", and "what will

>be when one disk fail while system running".



On CCD it is up to you to spot read/write errors and replace the disk and

the dd it back from the clean disk. It is far more rudimentary than

raidframe.

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