Hi,
I was wondering how to set up an extendable raid, just for backup/data storage. It doesn't need to be high-performant - so imho I don't need a hardware-raid.
To provide a minimum of security I was wondering about using a soft-raid 5 under Linux. However, I need to be able to extend the raid, if backup demand rises. Therefor I plan to use a raid 5 with three or four devices at the moment and need to be able to add more as the requirements grow.
I saw that in mdadm, version 1.7.0, there was a "grow"-feature introduced. However, at present it just works fine for raid 1 as far as I know. Can somebody tell me, if it will shortly (in the next few month) be possible to extend a soft-raid 5 with mdadm as well? What do you think about data-security? And do I need a plain raid 5 with ext3 on it or should I maybe put an LVM on top of raid 5 to be flexible?
Your feedback would be very much appreciated.
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