my environment:
6 * 3060-G4 NODE
per node : 2*ssd 480G, 4* HDD(how to find out if it`s sas or sata drive ?)1TB
RF=2
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how to calculate?
I see prism report 22.18TiB MaxCapacity(Physical)。but I think physical should be 1T*4*6+480G*2*6=24T+5760G
if RF2 need two complete copy(like RAID1) ?, the usable capacity is just half of 24T+5760G, and if after one node failure, for N+1 , I should also reserve another extra node capacity(4T+480G*2) ?
also I have a basic question and guess, if I have three NODE in all(assume not 6 node ), and one node failed, lost data will be replicate to another any node of remaining two, because of RF.
so I have two copy again. but if the second node also fails later(now I have only one node), will the cluster be down ? data lost ? I think data shouldn`t be lost because one of the two copy exists(3 node ,2copy-> 2 node 2copy-> 1node 1copy) . what a basic and silly guest !
the similar quesiton is can nutanix cluster be installed or work with 2 node ? certainly not, but I just can understand why ?
the customer challenge me for that too, it seems wastes too much space.
any response would be appriciated!
Best answer by Jon
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