How to expand RAID 1 disk size

Server: R710
RAID controller: PERC 6i
DELL Openmanager system management version: 8.3
RAID 1 disk: 750G, not OS, for share data drive
Need to change two 750G to 2TB HD. I already changed one 750G to 2TB by offline one old drive, pull out old, push in new 2TB  HD, then do the rebuild.
The question is how can I replace second 750GB to 2TB and increase disk size to 2TB.
Simply replace just create another 750GB disk.
I wish I do not need to initialize disk or take any risk to lost data.
Snowy CanadaNetwork AdministratorAsked:
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arnoldConnect With a Mentor Commented:
How many bays are occupied?
Or better stil, do you have one open/available bay?
Volume expansion was possible, though poweredgetech suggests that perc6 might not ..
In that case, creating a single member raid1 using your 2TB then do the restore as suggested on this 2TB volume.
You can then swap the ... Offline the 750GB volume, add the second 2TB to the existing raid 1 of 2 TB.

Though my prior experiences with perc had the ...

See whether the issue relates to server admini version.

Upgrade of controller? Make sure to install the perc700 drivers this way when the raid config from the drive is loaded, the OS will have the drivers to boot the system.

Potentially use only one of the raid 1 pairs in case the raid import does not work, so you can go back with the perc 6 and the other set of drives.
David Johnson, CD, MVPOwnerCommented:
the same way you did the first disk, then go into diskmgmt.msc and expand the drive
PowerEdgeTechConnect With a Mentor IT ConsultantCommented:
You can't. Online Capacity Expansion doesn't work that way on a PERC 6. You will need to do a backup/restore to the larger VD, or put larger
drives in a new VD and clone from the smaller VD to the larger VD. You can't extend the drive in Disk Management because the VD is still the same size, and you can't expand the VD to fill the space.
PowerEdgeTechConnect With a Mentor IT ConsultantCommented:
You could add drives and convert it to a RAID 5 or 6, but you can't expand the RAID 1 by replacing the disks with larger ones. This is a limitation of the PERC 6 controller. You need the H700 with updated firmware to do the type of expansion you are talking about. Avoid what is called a "retag" if you find it while searching for options.
Snowy CanadaNetwork AdministratorAuthor Commented:
Thank you so much for all the advices
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