[Linux-PowerEdge] Degradated array configuration

Mauro Antivero mauro.antivero at gmail.com
Thu Sep 19 03:14:56 CDT 2013

El 18/09/13 22:01, cupertino escribió:
> You could create a RAID1 and remove one HDD which will result in a
> degraded RAID. The same (removed) HDD can then be used together with
> your 3rd HDD to create the 2nd RAID1. (Might be necessary to clear all
> config from removed HDD before it can be used for a new RAID.)
Yes, but the problem is that at the moment I don't have another 2 TB 
disk. I currently have:

2 x 1 TB disks in RAID 1
1 x 2 TB disks with no raid

So, If I use one of the 1 TB disk with the 2 TB disk to create an array 
1 configuration the virtual disk will be only 1 TB.

What I'm going to do is install the system (Debian Wheezy) without the 
TB disk. Is really a shame but is the only thing that I can do for the 

I think that the "create degradated array" (as in Linux with mdadm) will 
be an excelente feature. In fact I can't believe that a hardware RAID 
controller does not have this feature.

Thanks a lot for your help.


> On Wed, 2013-09-18 at 15:09 +0000, Mauro Antivero wrote:
>> I'm currently learning how to use the BIOS config utility to manage the
>> PERC H200 RAID controller on a Dell PowerEdge R310.
>> Actyally the server has 3 disks:
>> Slot 1    1 TB Disk
>> Slot 2    1 TB Disk
>> Slot 3    2 TB Disk
>> I already configured disks in slot 1 and 2 as RAID 1. Now I want to
>> configure the disk in slot 3 as RAID 1 too, but degradeted, because I
>> don't have yet another disk to put in slot 4. The problem is that the
>> BIOS utility doesn't allow me to configure RAID 1 using the disk in slot
>> 3 because I need another disk in slot 4.
>> I want to do this because when I will have the system fully configured
>> and running and then insert another disk in hot the RAID will rearm
>> automatically.
>> If I can't do this, when I insert a new disk in slot 4 I will need to
>> reboot the system, enter the BIOS config utility and then configure the
>> RAID 1, selecting disk in slot 3 as master.
>> So, is posible to configure a degradated RAID 1 in the BIOS config utility?
>> Thanks and best regards.
>> Mauro.
>> _______________________________________________
>> Linux-PowerEdge mailing list
>> Linux-PowerEdge at dell.com
>> https://lists.us.dell.com/mailman/listinfo/linux-poweredge

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