Hi,
I have an older fedora install that I need to upgrade. It has 8 Intel
SSD 520 Series 240GB disks in there now, mounted on root using an LSI
SAS 9260-8i controller. There is about 1.3TB usable space.

I need to upgrade it to add more space. If I bought eight 512GB SSDs,
how do I calculate how much usable space I would have after
partitioning/formatting using XFS? Can I safely use XFS on the root
partition?

My strategy to upgrade the system using the eight new 512GB SSDs would be:

- Add two regular 2TB disks as RAID1 to the existing system
- Copy the 1.3TB of user data onto it
- Remove the eight existing 240GB SSDs
- Install the eight new 512GB SSDs
- Install fedora30 onto the new system
- Migrate the old configs from backup onto the new system
- Mount the two RAID1 drives onto the new system
- Copy data from RAID1 array to new system

Do I need to migrate the RAID1 config, or will mdadm figure it out on its own?

Anything else I should watch for?
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