Is there a document with instructions for this? I've had smartd warnings that a hard disk in my server is sick, so I am installing a new drive (in addition to the old).
Not to hijack a thread but on a similiar note. I have a Centos 4.x server with a 500G sata drive working fine except for disk I/O issues at peak times. I have copied it to a new drive before using 'dd if=/dev/sda of=/dev/sdb bs=16384' in middle of night offline. I did that in past because 'smartctl -a /dev/sda' did not work on the old drive. Is there a way to copy it to a hardware RAID 1 array of two drives in a similiar way? If so what not too expensive 2 port hardware raid controller do you reccommend and how do you do it? Thanks.
Matt
Is there a way to copy it to a hardware RAID 1 array of two drives in a similiar way?
The same way? The underlying OS knows nothing of the physical geometry behind a hardware raid controller. Find out what dev it is, sd? and do what you did, so long as it's exactly the same size or bigger.
If so what not too expensive 2 port hardware raid controller do you reccommend and how do you do it?
2 port? never seen one, but I like LSI's... jlc
Is there a way to copy it to a hardware RAID 1 array of two drives in a similiar way?
The same way? The underlying OS knows nothing of the physical geometry behind a hardware raid controller. Find out what dev it is, sd? and do what you did, so long as it's exactly the same size or bigger.
Would going from a single 500G sata to two 500G sata drives in hardware raid 1 work? Just wandering if some space will be lost using raid 1?
Matt
Would going from a single 500G sata to two 500G sata drives in hardware raid 1 work? Just wandering if some space will be lost using raid 1?
Again like I said: The same or bigger. Often HW raid controllers coerce the size of a drive down a gig or so slightly different drives can all work together. Likely the answer is no...
Although dd can work fine, it's far from the only tool do what you want.
On Wednesday, September 29, 2010 12:13:52 pm Matt wrote:
Is there a way to copy it to a hardware RAID 1 array of two drives in a similiar way? If so what not too expensive 2 port hardware raid controller do you reccommend and how do you do it?
3ware 9500S; can be had used and NOS (New Old Stock) on eBay cheap, and has great Linux support. Performance isn't stellar, but is adequate. I'm looking right now at a 'buy it now' on an 8 port for $59 free shipping. I see an older 8006-2LP (used) with a starting bid of $9.99.
I am using one I got a couple of years ago NOS off eBay; it's the 4 port 9500S, and it has been in production for two years at this point.
You can clone the single drive to a RAID logical drive just as if the RAID was a single drive.
You just need to make sure the 3ware's drivers are in your initrd; either put the module there before the clone or using a live boot CD.
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Joseph L. Casale -
Lamar Owen -
Matt