Currently, I have 4 hard disks which have been configured as RAID 1+0 in HP Proliant 380 G7, SmartArray p410i. I am planning to buy other new 8 hard disks to replace old array by swapping the disks out and keep the old array as backup. I also make full backup and I will use this backup to restore to new 8 hard disk array. Can I still use the old 4 disks if I already configured RAID 1+0 with new 8 disks?
So if I decide I want to go back to the old array (for example restore to the new array failed), I can just take the new array 8 disks out, put the old array 4 disks in and the data will be readable?
I did the research on HP Business Communities forum and they said it is possible to do that without data lost. they instructed to start the server without any disk and try clear any configuration exists then put previous disks back which was installed on the server in the correct slots if possible.
May someone confirm this that it really works?