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Create a new RAID 1 with existing hard drive without losing data

 
Occasional Contributor

Create a new RAID 1 with existing hard drive without losing data

Hi All,

We have two internal disks in BL 460C G10 blade (in C7000) and on one of them the OS is installed and rest of the app data is also stored. The another disk is not in use.

Now, we want to create a RAID 1 from these disks. Is it possible to do this without losing data?

 

11 REPLIES 11
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Acclaimed Contributor

Re: Create a new RAID 1 with existing hard drive without losing data

It depends.
If the dis currently is a RAID0 you can extend to RAID1, if it is a plain disk you need to backup and restore.

Hope this helps!
Regards
Torsten.

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Occasional Contributor

Re: Create a new RAID 1 with existing hard drive without losing data

Hi Torsten,

No, we haven't configured any raid, its just a separate disk.

Is there any way we could put these disk (one used + one used) in RAID1 and mirror the used disks data onto another disk.

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Acclaimed Contributor

Re: Create a new RAID 1 with existing hard drive without losing data

It depends on what disk controller model is used.

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
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Occasional Contributor

Re: Create a new RAID 1 with existing hard drive without losing data

Hi Torsten,

We have "HPE Smart Array P204i-b SR Gen10" disk controller. FW - 2.62

 

 

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Acclaimed Contributor

Re: Create a new RAID 1 with existing hard drive without losing data

I think it should be possible to create a RAID0 on the other drive, copy your data and finally extend the RAID0 to RAID1.


Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
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Occasional Contributor

Re: Create a new RAID 1 with existing hard drive without losing data

Hi Torsten,

How to copy data? Are you talking about rsync?

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Honored Contributor

Re: Create a new RAID 1 with existing hard drive without losing data

If currently the disk is not in a RAID array, there really isn't a simple path to get to where you want to be without destroying the data on the disk. 

No support by private messages. Please ask the forum! 
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Acclaimed Contributor

Re: Create a new RAID 1 with existing hard drive without losing data

Consider a disk cloner of your choice, clonezilla etc.
Depends on your OS.

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
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Occasional Contributor

Re: Create a new RAID 1 with existing hard drive without losing data

Hi Torsten,

If i use dd to clone the used hard disk with the another unsed one (which i add to RAID0), will it work?

Will the cloning of hard drive from dd in rhel7 will do tht work?