HPML110 G6, migrate raid level from 1 to 10 with HP Smart Array B110i

I have a Hp Proliant 110 G6 server, some years ago, we installed it with two drives in a Raid 1 configuration, the space is running out and we want to upgrade to Raid 10..

I have two options,
First one:
Buy two identical drives, upgrade from raid 1 to 10, can I do it on the fly?, or do I have to restore from backup?

Option two:
Buy four bigger drivers, destroy the array, change the array to raid 10, restore from backup. (I know this will work)

If I destroy the array, put four new drives, configure raid 10, restore from backup, if something goes wrong, Can I insert my old disks, create back the raid 1 configuration and start Windows? Or am I fried??
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marpanetAsked:
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andyalderCommented:
B110i is just the Intel chipset RAID with HP's code on it, it doesn't support expansion the way proper Smart Array controllers do.
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marpanetAuthor Commented:
So, what should I do?
Option two with a really good backup?
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andyalderCommented:
Either way will work but you have to backup/restore or image it in each case.

There is a 3rd option though, buy two bigger drives and add them as a second RAID 1 and set that up as D: and then move a load of data to it freeing up lots of space on C:. This has the advantage that you do not cross the 2TB boundary since ProLiants cannot boot from logical disks greater than 2TiB.
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marpanetAuthor Commented:
Instead of trying a backup and restoring, just adding two more drives worked (3rd option).

Best regards,
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