For VNX 5100 we will have 4 vault drives and the drives will not have any RAID level configured by default.  15 - 4 (vault drives) = 11 11 - 1 (1 hot spare) = 10  Usable space with RAID 5 on the 10 drives will vary depending on the number of disks per RAID Group ( You will get ~2.09 TB  per RG if you are going for 2x RAID5(4+1)  and ~4.7 TB of a 9+1 RAID5) .If you are using vault drives also for user data (highly recommended not to put response time sensitive applications on vault drives) you will get  ~1.03 TB from it (RAID 5).  Use VNX and VNXe Capacity Calculator  from support.emc.com
Hi All, we are going to purchase new storage box. Please find the below specifications. EMC VNX 5100 / Dual Controller / 8 x 8Gbps FC Front-end Ports / 15 x 600GB 15K rpm 6Gbps SAS Disk / 8GB Memory / Unisphere  I need to know what is default raid came this box? i need to build RAID-5. what is the maximum usable size? how much space allocated for vault area? first four disk or first five disk have the vault?
EMC VNX 5100 Vault and Usable Space?