Hi, We finally found a solution. USing ADAPT raid level and LVM. Thanks for your help.
Hi, I am setting up a PowerVault ME4084 with 42 disks of 11TB each. The Storage array is directly attached to a server via SAS. The idea is to access the storage as only one big volume from the server.Here is what I am planning to do: - Create 42 linear disk groups with NRAID - Create 42 volumes - Map the 42 volumes to the server so I can see them as disks from the server - Create a zfs pool with 5 x raidz2 of 8 disks + 2 hotspares My question is what performance I can expect with this setup ? Thanks for your answers in advance  
Linear disk groups with NRAID performance