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Hi,
Just wanted to find out: before creating a software RAID array is it necessary/beneficial to partition or even format each individual drive?
Thanks
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It all depends:
If you are going to use an array on the entire disk, you can just leave them alone and use mdadm to combine them entirely (using /dev/hda and /dev/hdc rather than /dev/hda1 and /dev/hdc1). But if you want to only use part(ition)s of the disks as an array, you'll have to create those (identical, preferrably) partitions first. Afterwards you can use mdadm and /dev/hda1 and /dev/hdc1 to create your RAID array.
When you created the RAID array, you'll have a new device: /dev/md0. You can then create your partitions on this device.
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Ok Thanks, that makes sense.
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