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NT4.0 add 2 drives and setup mirroring

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9 replies

by davew43boss

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I have an NT4.0 server that has 5 9GB drives setup in RAID 5. I also have a 4.3GB split with operating system and cache on it. This is my C drive and is setup in FAT. I have added 2 more 9GB drives that I would like to set for C drive with mirroring and have a small FAT partition along with the rest being NTFS. I tried to setup mirroring for the 2 drive in NT Disk Administrator with no luck. I have the 2 drives showing and tried to click the Fault tolerance menu option with no luck as the mirroring option was greyed out and I cannot set. Any ideas on why this is happening?

9 replies

by timwalsh

I think I understand what you are trying to do, but let me verify first:
The 5-drive Raid 5 array is self-explanatory.
You have a sixth (?) drive (C:\; 4.3GB - formatted FAT) that has 2 partitions (1 for system, 1 for paging file?). You want to replace your current C drive with 2 mirrored 9GB drives with 2 partitions (1 FAT, 1 NTFS). Is this fairly accurate?

I suspect this to be your problem. The software Fault-Tolerance options provided by NT only work with partitions, not entire drives (unless the drive is a single partition).

Another possibility is that you don't have at least one partition created yet. You must have a partition created to mirror it.

Hope this helps.

by curlergirl

In order to mirror a drive in NT 4.0, you have to partition and format the first drive in the mirror, and then create the mirror by clicking the partition you want to mirror, then CTL+click the unpartitioned second drive (so that both drives are highlighted). Then click the Fault Tolerance selection on the menu and NT then creates a mirrored partition on the second drive of the same size as the one(s) on the first drive. Hope this helps!

by @lberto

Hello,

In order to make mirroring on Windows NT 4, first of all you have to have NTFS partitions, so, step one, make all your partitions NT, then go to Disk Manager, click the partition you want to mirror and press CTL, then Windows will build the mirror for you.

Please e-mail me back if you get problems.

alberto@wirelesscuracao.com

by bazargan

create a protion on one of the drives and format it then select the portion and other drive to make them mirror

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