Is there any app/program I can use to mirror 2 external hard drives so that they stay in sync, without erasing them first? All the guides I see online either require a raid card, or require me to erase the drives first.
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RAID 1/Drive Mirroring without Erasing Drives?
- Thread starter cclloyd
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If you want automatic mirroring you're looking at setting them up using RAID 1 and likely wiping the disks. [Not totally sure about the wiping. Higher raid levels such as 5 require reformatting in order to set up the striping information across disks]. You can manually synch the disks on a schedule using carbon copy cloner. I believe the smallest granularity is hourly.