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Does RAID delete old data

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raid will re partition the drive and it will delete your data

i found an old hhd in a laptop that i was fixing (replaced it with a ssd), and i wanted to add it to my pc and run it with my existing hhd in RAID. i was just wondering if RAID will delete the data on my existing drive. Also, my existing drive is 500gb and the extra one is 1tb.

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raid will re partition the drive and it will delete your data

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Yes, it will.

 

Your two RAID options are 1 and 0. 1 will mirror data across both drives for a redundant copy in case one drive fails. This wil limit you to a total size of 500GB, the size of the smallest drive in the array. 0 offers no redundancy, if either drive in the array dies all data is lost. It can offer faster transfer speeds. This would be 1TB, the size of the smallest drive, multiplied by the number of drives (500GB x2 in this case)

 

Can't say I'd recommend either option really. I'd advise adding it in an just using it as an additional drive rather than putting it in RAID.

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