[Sussex] BIG disks....

[Mark Harrison]

Thanks all,

Traditional RAID isn't going to be a viable answer, because of the need to
dynamically increase logical volume size on the fly.

NAS hardware may well be the answer. I guess that the question was "how do I
implement a NAS solution in Open tools?"

The LVM stuff looks promising....

M.




----- Original Message ----- 
From: "John Crowhurst" <fyremoon at fyremoon.net>
To: "LUG email list for the Sussex Counties" <sussex at mailman.lug.org.uk>
Sent: Saturday, November 06, 2004 9:34 PM
Subject: Re: [Sussex] BIG disks....


>
> > Sorry if this is a dumb question.
> >
> > I have (maybe) a requirement to create a single big (a few Tb) "virtual
> > disk".
> >
> > This will be, for various reasons, based around outboard FireWire2 hard
> > disks, possibly using 1.6Tb drives, but more likely using 1Tb drives.
> >
> > The question is one of disk management.
> >
> > In the past, when I've had multiple physical disk drives on a server,
I've
> > given each a mount point. What I'm really after is something that
> > functions as a hot-configurable controller, so that I can add extra
drives
> > to the pool, and have them function as if they were a single drive....
>
> You probably want to look at a RAID solution, where the drives are striped
> together into one virtual partition.
>
> You can create a linear partition, where two (or more) drive partitions
> are joined to create one large one.
>
> The Software-RAID HOWTO shows you how to setup and implement Linear and
> other RAID configurations using md, here:
>
> http://unthought.net/Software-RAID.HOWTO/
>
> > Possible? Easy? Pointers?
>
> Creating Software RAID configurations are very easy, and just involve
> changes to the /etc/raidtab and the right tools to implement it.
>
> -- 
> John
>
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>