https://community.hpe.com/t5/disk-enclosures/creating-a-raid-0-with-data-on-disk0/m-p/3000609#M8778 Hi<BR /><BR />When you add an extra disk to your system and you then want to create an array, you lose your data when the array is initialized. <BR /><BR />Also notice that raid 0 is striping which means that data is striped over two or more disks which will give you really great read/write performance but when you lose one disk you lose ALL your data. As a minimum you should use raid 1+0 which is mirroring and striping. So here you can affort to lose one disk but be quick to change the failed disk. <BR /><BR />Best Regards <BR />Tommy Thu, 19 Jun 2003 11:43:54 GMT Tommy frandsen 2003-06-19T11:43:54Z https://community.hpe.com/t5/disk-enclosures/creating-a-raid-0-with-data-on-disk0/m-p/3000608#M8777 Hello<BR /><BR />Im not shure if this is a "smart" question but i will try anyway :)<BR /><BR />I have a customer who wants to upgrade his HP tc3100 with one more drive so that he can mirror the disks.<BR />But he has allready a server with Windows 2000, Exchange 2000, MS SQL 2000.<BR />Prit and file sharing , well all that stuff.<BR /><BR />Is it possible to insert a new disk and make a raid 0 without erasing the system on disk 1 ?<BR /><BR />Best regards form Norway Wed, 18 Jun 2003 09:07:11 GMT https://community.hpe.com/t5/disk-enclosures/creating-a-raid-0-with-data-on-disk0/m-p/3000608#M8777 Dag Espen Gulliksen 2003-06-18T09:07:11Z https://community.hpe.com/t5/disk-enclosures/creating-a-raid-0-with-data-on-disk0/m-p/3000609#M8778 Hi<BR /><BR />When you add an extra disk to your system and you then want to create an array, you lose your data when the array is initialized. <BR /><BR />Also notice that raid 0 is striping which means that data is striped over two or more disks which will give you really great read/write performance but when you lose one disk you lose ALL your data. As a minimum you should use raid 1+0 which is mirroring and striping. So here you can affort to lose one disk but be quick to change the failed disk. <BR /><BR />Best Regards <BR />Tommy Thu, 19 Jun 2003 11:43:54 GMT https://community.hpe.com/t5/disk-enclosures/creating-a-raid-0-with-data-on-disk0/m-p/3000609#M8778 Tommy frandsen 2003-06-19T11:43:54Z