JBOD mode on MegaRAID?

[James_Giannoules at Dell.com]

Richard,

What type of controller did you purchase with the PE2900? If it is a
PERC adapter you must follow the example below of creating several
single disk RAID-0 arrays. If you purchased a SAS6 controller all
unconfigured disks (not in a mirror or a stripe) are presented forward
to the OS for use.


-----Original Message-----
From: linux-poweredge-bounces at dell.com
[mailto:linux-poweredge-bounces at dell.com] On Behalf Of N. Richard Solis
Sent: Tuesday, March 11, 2008 1:00 PM
To: linux-poweredge-Lists
Subject: Re: JBOD mode on MegaRAID?

I just purchased a PowerEdge 2900 III and I'm wondering if I might have 
the same problem.

My intention was to forgo the hardware RAID and simply use software RAID

provided by Debian Etch.  Am I correct in assuming that I'll need to do 
some special configuration at the hardware RAID level to present the 
disks to the OS in a native fashion?

-Richard


Louis-David Mitterrand wrote:
> On Tue, Mar 11, 2008 at 12:49:11PM -0500, James Giannoules wrote:
>   
>> What were the 4 disks connected to in the PE840? Embedded SATA?
>>
>> The PERC adapter (MegaRAID) is reserving a section of the physical
disk
>> for metadata. This amount of reserved space is consistent with the
>> capacities you list below.
>>     
>
> Yes, they were connected to the motherboard sata ports. 
>
> I transfered back the disk to the PE840 without apparent damage and
will 
> recreate the partition from a new set of disks, then copy data to it.
>
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