Cannot create a RAID10 Disk Group Policy- Error: Number of spans

[JDMils]

I'm trying to create a UCS Disk Group Policy to choose disks 3 to 8 and configure them as RAID10. I seem to have entered all the details as far as i know, correctly, but get the error:

XXX Local lun disk group policy org-root/disk-group-config-MYDGCName, number of spans (1) is out of range.
6 slots are configured for one disk each with Span ID = 2.
or
6 slots are configured for one disk each with Span ID = unspecified.

XXX Local lun disk group policy org-root/disk-group-config-MYDGCName, has invalid num of disks in span: 3
3 slots are configured for one disk each with Span ID = 1.
3 slots are configured for one disk each with Span ID = 2.

XXX Local lun disk group policy org-root/disk-group-config-MYDGCName, has different number of disks in each span.
Slots 3, 5, 7 are configured for one disk each with Span ID = 1.
Slots 4, 6, 7 are configured for one disk each with Span ID = 2.

What's a span?

What worked was this:

Slots 3 & 6 are configured for one disk each with Span ID = 1.
Slots 4 & 7 are configured for one disk each with Span ID = 2.
Slots 5 & 8 are configured for one disk each with Span ID = 3.

I don't get how this makes sense?

[Kirk J]

On the LSI/Broadcom based controllers, I believe you need to have raid 10 based on multiples of "4"

Kirk...

[JDMils]

So in my case, slots 3 & 6 are RAID1, slots 4 & 7 are RAID1 and slots 5 & 8 are RAID1? Then they are all setup as a RAID0?

I don't understand what the Span ID means? What does it do?