https://community.hpe.com/t5/disk-enclosures/raid5-mirror-c-partition/m-p/4134166#M25957 This is a disk cloning question, not a RAID question. You have 3 logical units or a logical units with 3 partitions?<BR />Anyway, there are programas like Acronis TrueImage that can perform a copy of a partition to another partition or a file. This works with USB hard disks too. Wed, 23 Jan 2008 14:13:57 GMT Víctor Cespón 2008-01-23T14:13:57Z https://community.hpe.com/t5/disk-enclosures/raid5-mirror-c-partition/m-p/4134165#M25956 HI<BR /><BR />I have a Proliant ML150G2 with 4 160Gb drives in a hardware raid 5. (it is our main domain controller – we do have a backup domain controller)<BR />The array have been split into 3 so the c (system) partition is part of the raid 5. Not ideal I know, it was already setup when I got here.<BR />I want to get a mirror of the system partition (c Drive).<BR />What is the best way? Can I just add another dive and then use windows disk manager to mirror c:<BR />Will it work if I attach an external hard drive and then use windows disk manager to mirror c:<BR /><BR />Fairly new to RAID so not sure what the best method is – I don’t want to start from scratch<BR /><BR />Many Thnaks<BR /> Wed, 23 Jan 2008 14:00:51 GMT https://community.hpe.com/t5/disk-enclosures/raid5-mirror-c-partition/m-p/4134165#M25956 ozydave 2008-01-23T14:00:51Z https://community.hpe.com/t5/disk-enclosures/raid5-mirror-c-partition/m-p/4134166#M25957 This is a disk cloning question, not a RAID question. You have 3 logical units or a logical units with 3 partitions?<BR />Anyway, there are programas like Acronis TrueImage that can perform a copy of a partition to another partition or a file. This works with USB hard disks too. Wed, 23 Jan 2008 14:13:57 GMT https://community.hpe.com/t5/disk-enclosures/raid5-mirror-c-partition/m-p/4134166#M25957 Víctor Cespón 2008-01-23T14:13:57Z