Going beyond a span length of 2 is referred to as enhanced RAID 10. It is a way to create RAID 10 virtual disks larger than 16 drives. You are only using 8 drives, there is no reason you should increase the span length. All you need to do is leave the span length at the default of 2 and select all 8 drives instead of 4. If you want read more on how enhanced RAID 10 works then you can read this article. www.dell.com/support/article/sln111362/
Long time lurker, first time poster looking for help with an R710 with an integrated Perc 6/i controller. I have 8 drives with 600GB of storage each and am trying to set up a raid 10. When I go to configure it to create 2 spans with 4 drives each I should have at least 2TB of space per mirror, but I am only getting 1167GB. I have not updated or changed any settings and have not installed an OS on it yet. If anyone can help me figure out why this is, that would be most appreciated.
Poweredge r710 Perc 6/i Only 1/4 of storage for raid 10