Hot disk change.

Johan Sjöberg johan.sjoberg at
Tue Apr 20 09:57:43 CDT 2010

You could always use a temporary disk if the controller doesn't find the array when the original disk is at another connector. I would also do the dd from a live-CD to make sure no changes are done during the copy. 

Connect temp/USB disk
Boot from live-cd
dd if=/dev/sda of=/dev/sdX
Shut down, replace disks and create new, larger array
Boot from live-CD
dd if=/dev/sdX of=/dev/sda


-----Original Message-----
From: linux-poweredge-bounces at [mailto:linux-poweredge-bounces at] On Behalf Of Fabio Catunda
Sent: den 20 april 2010 16:29
To: linux-poweredge at
Subject: Re: Hot disk change.

Thanks for all responses.

Now I see that I am in trouble.

I really cannot install everything from zero, it will take too long and 
might not work.

I would like to know your opinion about the following procedure:
1 - Shutdown
2 - Remove both disks
3 - Plug both 2TB new disks and create a new virtual disk on the controller
4 - Plug one of the old 250GB disks in a separate SATA connector
5 - dd if=/dev/sdb of=/dev/sda (where sdb is the old disk and sda is the 
new virtual disk)
6 - fstab, resize2fs, etc, etc...!

I really don't know if the OS will recognize and be able to read the old 
disk plugged in another SATA connector.

Thanks in advance.

Fábio Catunda.

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