Re: [Evms-announce] RAID & EVMS

[Mahdi H. <mh...@ye...>]

----- Original Message -----
From: "Mahdi Hajimoradi" <mh...@ye...>
To: "Steve Pratt" <sl...@us...>
Sent: Saturday, November 16, 2002 11:01 AM
Subject: Re: [Evms-announce] RAID & EVMS


> > Ok, let me take a shot at this:
> >
> > 1. Make a raid5 with the 8*4gb.  This will give you 28gb usable.
> > 2. Partition 17gb ide into 10gb and 7gb partitions
> > 3. Make a 2nd raid5 with the 2*10gb scsi + 3*10gb ide + 1*10gb partition
=
> > 50gb usable
> >
> > Then if you want 1 big volume combine the 2 raid5 array with Drive
Linking
> > to give 78GB volume.  If you want multiple volumes, than add both raid5
> > arrays to an LVM container and create regions of any size you want.
> >
> > As a note, you will have 7gb left over on the one disk that is not
raid5,
> > you can use this for whatever.
>
> Can I use that extra space to make another raid5(with other 7gb disk)?
> in general,is it possible to use 2 partition of one disk to make raid5(not
> only one prtn)?
>
> >
> > This is the best setup I can think of.  If if someone has a better idea
> > speak up, but except for the 7gb left out, this is pretty efficient use
of
> > disk space.
> >
> > Steve
> >
>
> ----- Original Message -----
> From: "Steve Pratt" <sl...@us...>
> To: "Mahdi Hajimoradi" <mh...@ye...>
> Sent: Thursday, November 14, 2002 7:06 PM
> Subject: Re: [Evms-announce] RAID & EVMS
>
>
> >
> > Mahdi Hajimoradi wrote:
> > >> 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
> >
> > Ok, let me take a shot at this:
> >
> > 1. Make a raid5 with the 8*4gb.  This will give you 28gb usable.
> > 2. Partition 17gb ide into 10gb and 7gb partitions
> > 3. Make a 2nd raid5 with the 2*10gb scsi + 3*10gb ide + 1*10gb partition
=
> > 50gb usable
> >
> > Then if you want 1 big volume combine the 2 raid5 array with Drive
Linking
> > to give 78GB volume.  If you want multiple volumes, than add both raid5
> > arrays to an LVM container and create regions of any size you want.
> >
> > As a note, you will have 7gb left over on the one disk that is not
raid5,
> > you can use this for whatever.
> >
> > This is the best setup I can think of.  If if someone has a better idea
> > speak up, but except for the 7gb left out, this is pretty efficient use
of
> > disk space.
> >
> > Steve
> >
>
>