So you have two 1TB drives striped into a 2TB RAID-0 volume with a third 1TB on standby not doing anything. If I understand correctly, you are wanting to replace one of the drives in your RAID-0 volume with this third 1TB drive on standby. Am I correct?
To my knowledge, you can't transfer data from one drive to another (hot spare) if it belongs to a RAID-0 volume. However, you can use a hotspare drive if one of two drives fail in RAID-1.
I'm not sure, but in theory you should be able to add a fourth 1TB drive and stripe it against your third 1TB to make a second RAID-0 volume. Then, assign this second RAID-0 volume to mirror the first (the one with the failing member drive). Just one problem though. This would be called RAID 01, and I think Intel Matrix Storage only support RAID levels 0, 1, 5, and 10. Not 01. However, you might be able to setup a software mirror between your two RAID-0 volumes in Windows Disk Manager to replicate your data, then decommission your original failing RAID-0 volume.
I would suggest making a backup of all your data to another drive of your choosing with backup software or a manual file copy first prior to making any attempts of rectifying the issue.
That is config.
need somehow copy info from bad to spare and after replace dotn drop arrays.
If this is be in silicon image raid controller i be able to copy byte to byte hdd's and simple replase bad with new, but in cervive center sayd that cant be done on intel because he store serial numbers of hdd's in bios and do not recognise copyed hdd as member of array's.
I have no place to backup 3 tb.
I can recover by software all info in image's of array's but still i have no free space to do that.
One way - copy bad hdd on new and somehow make intel raid accsept this hdd as member of array's.
Sory for my bad English ))
copy byte to byte hdd, backup mbr from health raid.
Delete raid and create raid with new hdd. Size and other parameters must be SAME.
Then copy winhex or other program mbr on new raid.
Run chkdsk with nofix and looking hard errors.. if errors is too many - need to review mbr for errors.
If a small amount of errors - chkdsk /f.
I recover all raid info and lost nothing.