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Backup Hard Drive Raid 1

Posted on 2014-01-22
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Last Modified: 2016-10-27
When I right click on Disk 1,
I do not have the choice to mirror. Only New Simple Volume is possible.

Disk 0:
OEM partition -- no choice for mirroring
Recovery -- Add mirror a possibility
C: -- Add mirror a possibility

How do I mirror Disk 0 onto Disk 1?

How do I utilize Intel Rapid Storage Technology, or do I?
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Question by:seramai
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by:dlethe
dlethe earned 167 total points
ID: 39802017
shrink the size of the C:\ partition.  You need 8MB free at the end of the disk. Then use the native windows software RAID.  The intel rapid storage is fake raid.  It is slow and prone to lots of errors.

Windows software RAID gives you load balancing, so read performance will be nearly twice as fast.  Google windows dynamic raid 1   and there are plenty of how tos, even some videos on youtube.
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by:noxcho
noxcho earned 333 total points
ID: 39802444
You need first to convert the disk0 to dynamic. Right click on disk (not on partition) and select - convert to dynamic.
Then convert the disk1 also to dynamic.
After that you can build a mirrors of your partitions.
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by:seramai
ID: 39802997
If I convert Disk 1 to Dynamic, will I lose the data?


Dell is wanting me to back up Disk 0 and reinstall the OS.

My solution is/was to create a Raid 1 array, remove the back up disk Disk 1, reinstall the OS on Disk 0, then reconnect Disk 1.

Is this good or a potential cluster flop?
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by:dlethe
ID: 39803060
Yes, you can safely convert to dynamic, as well as convert it to a RAID1 online.
(But best practice is to ALWAYS back up, nothing is ever 100%, not even reinstalling O/S over another version and being told you won't lose data).

Dell pretty much always tells people to reinstall and start over, just like Microsoft.  Ask for a level-2 person at dell and have them explain why you shouldn't convert to dynamic and then mirror.
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by:noxcho
ID: 39803294
It warns always about potentially dangerous operations but normally converting into dynamic disk runs without problem.
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Expert Comment

by:dlethe
ID: 39803329
Even EMC recommends backing up before reconfiguring RAID.  Obviously you don't have a full backup.  So the smart thing to do is make a backup.  Then you won't have to worry.
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by:Gerald Connolly
ID: 39804800
I agree with David. Always back it up, then there are no recriminations if what ever you planned to do doesnt work
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by:seramai
ID: 39805316
It says there is not enough room on the disks to do this. I'm not sure I understand why?

See attached screen shot.
capture.gif
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by:seramai
ID: 39805356
shrink the volume, I've got it
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by:seramai
ID: 39805373
Created the mirror. Now Disk 1 has a yellow triangle with a bang.
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by:seramai
ID: 39805376
The new Disk does not show up as the D drive or at all.
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by:dlethe
ID: 39805489
The new disk is not supposed to show up as a D: drive.   You have a software RAID1.  Effectively disk administrator is only aware that there is a 2nd drive.  The o/s will only see the C drive (which represents a pair of drives working together in parallel for redundancy & performance).

It is working as it is supposed to.
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Expert Comment

by:noxcho
ID: 39805864
Anyhow the yellow triangle must not be there if it is working as it is supposed to.
Right click on the disk (on the triangle) and see what options you get there.
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Author Comment

by:seramai
ID: 39806464
Diethe,

Ok. Thank you for your help.

How do I tell if the information on the mirror is actually there?

Also, when I do the Dell thing and reload the OS, I was going to physically remove the mirror disk, Disk 1, rerinstal the OS, then hook back up Disk 1.

I had a bad experience with Vista. Well, didn't we all. My two disk XP box was at its end when Vista was coming out, So, I thought I would move up. I spruced up the memory, bought Vista, and after the install, I noticed it had totally erased my backup disk.

Vista created some kind of relationship between the two disks. I'm not even sure it  was a Raid array.

This was especially disappointing as there was nothing in the install process that let me know that this was happening.

So, I am a little nervous.

Also, should I just go ahead and delete the Intel Rapid Storage progarm?

Thank you.
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by:noxcho
ID: 39806840
Actually instead of using this software RAID configuration would better use some backup software and take daily backups of your disk.
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by:seramai
ID: 39807419
noxcho,

Should I create three separate partitions on that back up disk for each area to be backed up: OEM, Recovery, and C or just one blob on the backup drive?
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Accepted Solution

by:
noxcho earned 333 total points
ID: 39807737
Disk0 remains as is - would be nice if you could make it again Basic but once converted with Microsoft you need always third party tool to convert it back to Basic.
On the second drive (also basic) you create single partition.
Then you get one if the free backup tools such as Paragon, Acronis or someone else.
Like this one: http://www.paragon-software.com/home/br-free/
Schedule backups on daily or weekly basis and then you do not need these RAID configurations for protection purpose.
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