I have just recently had to rebuild to NT4 servers, that were mirrored. I did not know that until after I had already reinstalled the OS. I would like to try the NT4 Mirroring, but I do not know much about it. If someone can summarize it it for me, or tell me what I need to do I would greatly appreciate it. My 2 data drives are identical, 2 9gb SCSIs on two seperate but identical controlers. Like I said they were mirrored before, just not sure if they were h/w or s/w mirrored. Using NT4/SP6
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NT Mirroring
- Thread starter RickeyH
- Start date
If the mirroring was occuring at the hardware level then simply reloading the operating system would not have any effect on that. You would then have a hardware RAID adapter and it would have it's own configuration for mirroring (RAID 1).
You can simulate RAID 1 in NT using Disk Administrator. Click on the volume you want to mirror (in your case, the volume on your first drive). Hold CTRL and click on the volume on the second drive. Then select 'Fault Tolerance', then 'Mirror', then 'Establish Mirror'.
Depending on what sort of drives you have (ie: SCSI or IDE or whatever), you will have a performance hit - how much depends...
If you set this up then - should one of your drives fail - you won't lose any data...
It's well worth doing for a server I think. Consider the down time if you are forced to rebuild the machine from backup...
You can simulate RAID 1 in NT using Disk Administrator. Click on the volume you want to mirror (in your case, the volume on your first drive). Hold CTRL and click on the volume on the second drive. Then select 'Fault Tolerance', then 'Mirror', then 'Establish Mirror'.
Depending on what sort of drives you have (ie: SCSI or IDE or whatever), you will have a performance hit - how much depends...
If you set this up then - should one of your drives fail - you won't lose any data...
It's well worth doing for a server I think. Consider the down time if you are forced to rebuild the machine from backup...
It fairly easy to tell if you have hardware RAID already implemented. How much total space is used/available? If the sum is 9GB's, you can assume that the hardware mirror is already established.
If you have 18GB with two 9GB volumes, you probably do not have any mirroring set up.
If they were hardware mirrored, both SCSI drives (most likely) would have been conected to the same controller. Seeing how you have two identicle controllers, its safe to assume that you will have to use SOFTWARE mirroring.
I suggest you follow the above instructions to create an OS mirror. Joseph L. Poandl
MCSE 2000
If your company is in need of experts to examine technical problems/solutions, please check out
If you have 18GB with two 9GB volumes, you probably do not have any mirroring set up.
If they were hardware mirrored, both SCSI drives (most likely) would have been conected to the same controller. Seeing how you have two identicle controllers, its safe to assume that you will have to use SOFTWARE mirroring.
I suggest you follow the above instructions to create an OS mirror. Joseph L. Poandl
MCSE 2000
If your company is in need of experts to examine technical problems/solutions, please check out
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