1 file system, 2 drives?

Diego Arias dak.col at gmail.com
Mon Jul 26 20:53:26 UTC 2010

On Mon, Jul 26, 2010 at 3:30 PM, John Almberg <jalmberg at identry.com> wrote:

>  If you have hardware controller with RAID capabilities, using native RAID
>> is better, otherwise look towards gvinum or maybe ccd; see also:
> I've just been reading up on RAID in my Absolute FreeBSD book, and it
> occurs to me that my client has a SCSI RAID drive chassis that he is using
> stupidly...
> It's a 14 bay drive, and he's currently got seven 32G drives stuck in it,
> configured with RAID-0. This is the original 200G drive I was talking about.
> It's a few years old.
> Over the next few years, this guy is going to need lots of storage for his
> videos.
> After a bit of reading, I'm wondering if the best idea might be to toss out
> those 32G drives and replace them with 3 big (say, 300G) drives configured
> with RAID-5. It sounds to me like a RAID-5 array can be expanded by adding
> new drives.
> QUESTION: is expansion normally a matter of just plugging in a new drive?
> Is the new drive automatically grafted onto the old drives? Or do you have
> to go through a process like, backing up the data, plugging in the new
> drive, reformatting the expanded array of drives, and restoring the data.
> I don't know the brand/model of the RAID drive chassis, but the client
> thinks it can be switched to use RAID 5. I'm waiting for the technical
> details, but assuming it can handle RAID-5 for now.
> Thanks: John
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If the Write-performance its not a problem go with 3 drives. If you need a
good write performance go at least with 4 -or- use another RAID level. Maybe
the RAID Controller allow RAID 5 Grow but im not shure if FreeBSD can handle

mmm, interesante.....

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