4 Replies Latest reply on Dec 2, 2019 7:13 AM by ManivelR

    Confusion on RAID 5 VSAN FTT

    ManivelR Enthusiast

      I have a current setup with 4 nodes with FTT=1. I mean RAID 5.

      As per my current scenario,one node can go down at the time and remaining 3 nodes will be operational.During one node failure, existing operations will work but the new operations(new vm creation,snapshot creations,cloning etc..) will not work as we have only available 3 nodes.

       

      Lets assume:-

       

      5 nodes setup with FTT=1. I mean RAID 5.

      During this setup,2 nodes can go down right at the same time ?

       

      6 nodes setup with FTT=1. I mean RAID 5.

      During this setup,2 nodes can go down right at the same time ?

      Note:- RAID5 with FTT of 1 needs a minimum of 4 hosts, if one or 2 nodes fail, I will still be able to create VM since the minimum requirement for RAID5 with FTT of 1 is to have 4 nodes.

       

      Whenever I use 5 nodes or 6 nodes,at the same time 2 nodes can go down ?

       

       

      3 nodes FTT is applicable to only RAID 1 not RAID 5 ?

       

      Thanks,

      Manivel R