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Adding a 3rd Cache SSD

davidst95
in Storage Devices and Controllers

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Hi, I have two 500GB Cache drives.   Unraid tells me I have 500GB of usable space in the pool.   If I add a 3rd 500GB will that give me 1TB of space or still 500GB?   Thanks.

 

David

  • Quote
    21 minutes ago, davidst95 said:

    Hi, I have two 500GB Cache drives.   Unraid tells me I have 500GB of usable space in the pool.   If I add a 3rd 500GB will that give me 1TB of space or still 500GB?   Thanks.

     

    David

    Neither. You will get 500 x 3 / 2 = 750GB space with the default BTRFS RAID1 profile.

     

    If you rebalance to RAID0, you will get 1.5TB

    If you rebalance to RAID5, you will get 1TB.

    If you rebalance to RAID1C3, you will get 500GB.

     

     

     

     

  • Quote
    • Author

    Thanks for the info!   I didn't know UnRAID had these different options.

     

    David

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