:: Re: [DNG] Fake RAID
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Szerző: tito
Dátum:  
Címzett: dng
Új témák: [DNG] Web md RAID monitoring [was: Re: Fake RAID]
Tárgy: Re: [DNG] Fake RAID
On Wed, 9 Mar 2022 19:18:13 +0100
Didier Kryn <kryn@???> wrote:

> Le 09/03/2022 à 17:12, dng@??? a écrit :
> > On 09-03-2022 16:55, Hendrik Boom wrote:
> >> On Wed, Mar 09, 2022 at 02:42:07PM +0100, aitor wrote:
> >>
> >>> Did you read the following guide?
> >>>
> >>> https://wiki.debian.org/DebianInstaller/SataRaid
> >> Interesting note.
> >>
> >> What is a "fake RAID"?  Is it a RAID or not?
> >>
> >> -- hendrik
> >>
> > A real RAID controller has hardware and software on board and often a
> > battery backup. A "fake" RAID does have some hardware but no software
> > or better some software but depends on a Windows driver for the RAID
> > functions. Same trick as with Win modems and printers.
>
>
>     I have worked with Dell Poweredge servers around 15 y ago. These
> had PERC hardware RAIDs able to completely do the whole job without any
> help from the OS. The configured RAID devices were seen by the kernel as
> individual disks. After a few years working like this I configured the
> PERC so as to show every disk individually (therefore no RAID), and
> managed software RAIDs using mdadm. md RAIDS, not dm RAIDS. dm stands
> for device-mapper, which also means Logical Volume Manager. On the
> contrary of what is said in the Debian document, I found LVM (dm RAIDs)
> not much more usefull than md and overly complex. On the other hand,
> mdadm also is not a piece of cake but I can find my way with it and I
> have developped a graphics monitoring tool for it, actually a little web
> server displaying the status of all the host's md RAIDs.

Hi,
I'm interested about this web server thing is it packaged?

Ciao,
Tito

>     What I mean is that there is probably the possibility to configure
> the PERC as no-RAID and build a software RAID on Linux, if this is
> manageable for your Win10.
>
> --     Didier
>
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