On Tue, 18 Dec 2007, Justin Piszcz wrote:
On Tue, 18 Dec 2007, Guy Watkins wrote:
} -----Original Message-----
} From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid-
} owner@xxxxxxxxxxxxxxx] On Behalf Of Brendan Conoboy
} Sent: Tuesday, December 18, 2007 3:36 PM
} To: Norman Elton
} Cc: linux-raid@xxxxxxxxxxxxxxx
} Subject: Re: Raid over 48 disks
}
} Norman Elton wrote:
} > We're investigating the possibility of running Linux (RHEL) on top of
} > Sun's X4500 Thumper box:
} >
} > http://www.sun.com/servers/x64/x4500/
}
} Neat- 6 8 port SATA controllers! It'll be worth checking to be sure
} each controller has equal bandwidth. If some controllers are on slower
} buses than others you may want to consider that and balance the md
} device layout.
Assuming the 6 controllers are equal, I would make 3 16 disk RAID6 arrays
using 2 disks from each controller. That way any 1 controller can fail and
your system will still be running. 6 disks will be used for redundancy.
Or 6 8 disk RAID6 arrays using 1 disk from each controller). That way any
2
controllers can fail and your system will still be running. 12 disks will
be used for redundancy. Might be too excessive!
Combine them into a RAID0 array.
Guy
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I'd be curious what the maximum aggregate bandwidth would be with RAID 0 of
48 disks on that controller..
A RAID 0 over all of the controllers rather, if possible..
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