Correct – 4 vault drives required with VNX1/VNX2 – same config and size no matter what model
Hello,  As I know that the first 4 drives on the VNX Disk Enclosure (Disk 0-3) are reserved for the operating system of the storage array, & are called vault drives. Is it fixed that the number of drives for vault drives on VNX (Unified, Block-Only, File-Only) is FOUR? From the VNX capacity calculator the number is four for each vault drives I create. However from EMC Channel Express I've noticed when choosing the vault drives, that it gives plenty of options for the Base Drive Configuration like: - 12*2.5'' 10k 600GB - 8*2.5'' 10k 600GB - 4*2.5'' 10k 600GB + 8**2.5'' 1TB NL-SAS  Does it mean that 4 drives will be used for Vault & the remaining for Data (Raid Groups or Pools), or the number for vault drives can increase depending on the VNX model & type (Unified or not)  Thanks,
VNX2 Unified Vault Drives