Mirror them. Here are the instructions.
To add a mirror to an existing simple volume
Open Disk Management.
Right-click the simple volume you want to mirror, click Add Mirror, and then follow the instructions on your screen.
Notes
You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings may also prevent you from completing this procedure.
To open Disk Management, click Start, point to Settings, click Control Panel, double-click Administrative Tools, and then double-click Computer Management. In the console tree under Storage, click Disk Management.
You can mirror volumes only on computers running Windows 2000 Server.
Any existing simple volume can be mirrored onto another dynamic disk, as long as there is sufficient unallocated space on that disk. If you don't have a dynamic disk with enough unallocated space, the Add Mirror command is unavailable. (To verify you have enough space, right-click the disk, click Properties, and then check the size in Unallocated Space. This size may be slightly smaller than shown in the graphical and list views.)
Mirrored volumes are fault tolerant.
You cannot extend a simple volume after it has been mirrored.
The same drive letter is used for both copies (mirrors) of a mirrored volume.
http://www.experts-exchange.com/Operating_Systems/Win2000/Q_20262135.html
I did a trick which worked fine: I was able to restore my system in 20 minutes.
Installed a second OS, then created a batch dos file to copy the files from one disk to another. Some files should be excluded (temp files and some others)
Here is the batch:
del h:\D_BOOTNT_BIG_SAVEPOINT\*.* /S /Q
c:
cd documents and settings\ol
attrib -h "param?tres locaux"
cd param?tres locaux
del.\temp\*.* /s /q
del C:\Documents and Settings\All Users\Documents\DrWatson\user.dmp
cd \
attrib -h -r -s c:\pagefile.sys
DEL C:\pagefile.sys
xcopy c:\*.* h:\D_BOOTNT_BIG_SAVEPOINT\ /S /H /Y /R /E /C
cd c:\D_BOOTNT_BIGSAVEPOINT
c:
attrib -h -s RECYCLER
del /S /Q RECYCLER
rmdir /S /Q RECYCLER
attrib -h -s RECYCLED
del /S /Q RECYCLED
rmdir /S /Q RECYCLED
With this, I am copying everything from c:\ to a folfer in h:\, dealing with some exceptions: the temp folder, Dr Watson dump file, the recycle bin and the swap file. All these are not needed in my backup.
Try to adapt this for your configuration, and remember that you need to run it from another Win2000 OS in order to get rid on the busy files.