Re: [Evms-announce] RAID & EVMS

> Let me make sure I understand what you want to do: You have 5 disks,
> and want to combine three of them into a single object, and use that
> object along with the remaining 2 disks to create a RAID-5 object? Is
> this correct?
almost yes, but exactly 13 Disks!!:"8*4GB SCSI HDD + 2*10GB SCSI + 3*10GB
IDE +17GB IDE HDD"
and I need almost 80GB RAID5
> Why not just use the five disks directly to make a RAID-5 object?
because as you  see the size of my disks are not the same.
> What are the sizes of each of your disks? If the disks have
> dramatically different sizes, there are other tricks to play to make

> sure all of the available space is used efficiently.
and also protecting my data from disk failure.


----- Original Message -----
From: "Kevin M Corry" <[email protected]>
To: "Mahdi Hajimoradi" <[email protected]>
Cc: <[email protected]>
Sent: Wednesday, November 13, 2002 5:47 PM
Subject: Re: [Evms-announce] RAID & EVMS


>
>
> > TNX for your answer but I think you didn't get what I mean.Let me
> > explain more. I have 5 HDD with deferent size as a source object
> > and wan to concatenate them to make 3 storage object in purpose
> > of making RAID 5. Could you tell me if it's possible to do.
> > TNX in Advance
>
> Let me make sure I understand what you want to do: You have 5 disks,
> and want to combine three of them into a single object, and use that
> object along with the remaining 2 disks to create a RAID-5 object? Is
> this correct?
>
> Why not just use the five disks directly to make a RAID-5 object?
>
> What are the sizes of each of your disks? If the disks have
> dramatically different sizes, there are other tricks to play to make
> sure all of the available space is used efficiently.
>
> Kevin Corry
>
>
>
> ----- Original Message -----
> From: "Kylene J Smith" <[email protected]>
> To: "Mahdi Hajimoradi" <[email protected]>
> Cc: <[email protected]>
> Sent: Tuesday, November 12, 2002 6:28 PM
> Subject: Re: [Evms-announce] RAID & EVMS
>
>
> >
> > Yes you can use EVMS to create a raid 5.  However, if the objects are
not
> > of the same size the excess space on the bigger of the objects will just
> be
> > wasted.  So you might want to create segments of the same size first and
> > put the raid on top of these.
> >
> >
> > Kylie
> >
> >
> >
> >
> >
> >
> >
> > Hi
> > First of all, pardon me, this is (nearly) a kind of cross posting.
> > Is it possible to use EVMS volumes to make raid 5.?!
> > according to software-RAID HOWTO, LinuxRAID
> > can work on most block devices. It doesn't matter whether
> >  you use IDE or SCSI devices, or a mixture. So is it possible
> > to use EVMS to use multi hdd (with different size)together and
> > use them to create Raid.
> > TNX
> > --M. Hajimoradi
> >
> >
> >
> >
> >
> >
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