I have this weird situation. I have a Dell PowerEdge R710 server with two PERC H800 cards, the PERC H800 cards are connected to a Dell PowerVault MD1200 Direct Attached Storage. Here is how everything is setup
The first PERC H800 is connected to one of the PowerVault MD1200 EMMs which consists 6x4TB SAS drives
The Second PERC H800 is connected to the other of the PowerVault MD1200 EMMs which also consists 6x4TB SAS drives
I used the Dell Open Manage server administrator to setup RAID 10 with intelligent mirroring on both the cards. When choosing the drives I chose all the drives. After the RAIDs were initialized I realized that virtual drives showed a total capacity of 24 TB on both cards. Further investigation revealed that the same drives were assigned to both the RAIDs. I have a total of 48 TB available to me on both RAID 10s, the total capacity of the drives is also 48 TB. Now I understand that RAID 10 halves the total capacity of the drives, then how is that I have the total capacity available to me (24 TB on each RAID 10) and how is it that both RAIDs are using the same drives (drives with same serial numbers part of both RAID 10s)? is that a benefit of the intelligent mirroring feature, or is it just a glitch. I will appreciate your help on this. Thanks!