https://community.hpe.com/t5/disk-enclosures/raid-1/m-p/3750278#M19780 Akheel,<BR /><BR />I very much doubt it. Usually when you create an array the disks are initialised during creation.<BR /><BR />One possible alternative (although I don't reccomend it) is a software mirrored drive in Windows. I believe you can create these without destroying the source drive, check the documentation to be sure. However this is not hardware RAID !<BR /><BR />Jeff Tue, 14 Mar 2006 06:44:55 GMT Jefferson Humber 2006-03-14T06:44:55Z https://community.hpe.com/t5/disk-enclosures/raid-1/m-p/3750277#M19779 Hello to All!!<BR />I am running on HP Proliant ML370 Server with one 72.8K HDD,and with Windows 2003 as operating System. Now I want to implement Raid 1 without formating or damaging the current operating system. Is it possible, If yes then please help me out of this problem. Tue, 14 Mar 2006 03:27:27 GMT https://community.hpe.com/t5/disk-enclosures/raid-1/m-p/3750277#M19779 Akheel 2006-03-14T03:27:27Z https://community.hpe.com/t5/disk-enclosures/raid-1/m-p/3750278#M19780 Akheel,<BR /><BR />I very much doubt it. Usually when you create an array the disks are initialised during creation.<BR /><BR />One possible alternative (although I don't reccomend it) is a software mirrored drive in Windows. I believe you can create these without destroying the source drive, check the documentation to be sure. However this is not hardware RAID !<BR /><BR />Jeff Tue, 14 Mar 2006 06:44:55 GMT https://community.hpe.com/t5/disk-enclosures/raid-1/m-p/3750278#M19780 Jefferson Humber 2006-03-14T06:44:55Z