Fault Tolerance: 1+0

Good Day Experts

Platform: HP ProLiant DL380p Gen8, BIOS P70 01/22/2018
OS: Red Hat Enterprise Linux Server release 6.5 (Santiago)

I'm attaching the output of the command :

/opt/hp/hpssacli/bld/hpssacli ctrl slot=0 ld 1 show

I want to understand the meaning of : Fault Tolerance: 1+0

I see two mirror groups, 1 and 2, each one have 4 physical hard drives. Does it mean we are stripping 4 disks (RAID 0) for each group than mirror the two groups (RAID 1) ?

In other way, is it RAID 10 or RAID 01 ?

Thank you in advance.