On Sun, 7 Oct 2007, Dean S. Messing wrote:
Justin Piszcz wrote:
On Fri, 5 Oct 2007, Dean S. Messing wrote:
Brendan Conoboy wrote:
snip
Is the onboard SATA controller real SATA or just an ATA-SATA
converter? If the latter, you're going to have trouble getting faster
performance than any
Hello,
Recently I started to use mdadm and I'm very impressed by its
capabilities.
I have raid0 (250+250 GB) on my workstation. And I want to have
raid5 (4*500 = 1500 GB) on my backup machine.
The backup machine currently doesn't have raid, just a single 500 GB
drive. I plan to buy more HDDs
On Mon, 8 Oct 2007, Janek Kozicki wrote:
Hello,
Recently I started to use mdadm and I'm very impressed by its
capabilities.
I have raid0 (250+250 GB) on my workstation. And I want to have
raid5 (4*500 = 1500 GB) on my backup machine.
The backup machine currently doesn't have raid, just a
Janek Kozicki wrote:
Is it possible anyhow to create a very degraded raid array - a one
that consists of 4 drives, but has only TWO ?
No, but you can make a degraded 3 drive array, containing 2 drives and
then add the next drive to complete it.
The array can then be grown (man mdadm, GROW
} -Original Message-
} From: [EMAIL PROTECTED] [mailto:linux-raid-
} [EMAIL PROTECTED] On Behalf Of Richard Scobie
} Sent: Monday, October 08, 2007 3:27 PM
} To: linux-raid@vger.kernel.org
} Subject: Re: very degraded RAID5, or increasing capacity by adding discs
}
} Janek Kozicki wrote:
Richard Scobie said: (by the date of Tue, 09 Oct 2007 08:26:35 +1300)
No, but you can make a degraded 3 drive array, containing 2 drives and
then add the next drive to complete it.
The array can then be grown (man mdadm, GROW section), to add the fourth.
Oh, good. Thanks, I must've
Janek Kozicki said: (by the date of Tue, 9 Oct 2007 00:25:50 +0200)
Richard Scobie said: (by the date of Tue, 09 Oct 2007 08:26:35 +1300)
No, but you can make a degraded 3 drive array, containing 2 drives and
then add the next drive to complete it.
The array can then be grown
Janek Kozicki wrote:
Hello,
Recently I started to use mdadm and I'm very impressed by its
capabilities.
I have raid0 (250+250 GB) on my workstation. And I want to have
raid5 (4*500 = 1500 GB) on my backup machine.
Hmm. Are you sure you need that much space on the backup, to
start with?
} -Original Message-
} From: [EMAIL PROTECTED] [mailto:linux-raid-
} [EMAIL PROTECTED] On Behalf Of Janek Kozicki
} Sent: Monday, October 08, 2007 6:47 PM
} To: linux-raid@vger.kernel.org
} Subject: Re: very degraded RAID5, or increasing capacity by adding discs
}
} Janek Kozicki said:
On Tuesday October 9, [EMAIL PROTECTED] wrote:
o degraded raid5 isn't really Raid - i.e, it's not any better than
a raid0 array, that is, any disk fails = the whole array fails.
So instead of creating a degraded raid5 array initially, create
smaller one instead, but not degraded, and
On Tuesday October 9, [EMAIL PROTECTED] wrote:
Problems at step 4.: 'man mdadm' doesn't tell if it's possible to
grow an array to a degraded array (non existant disc). Is it possible?
Why not experiment with loop devices on files and find out?
But yes: you can grow to a degraded array
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