The information we have in the article pertaining to JBOD vs RAID supported is:

Support for Red Hat's Hyper-Converged Infrastructure is currently provided under Limited Availability to certain customers, with the following limitations:
- [...]
- RAID configuration limits depend on the technology in use:
   - for SAS 10k/15k disks, RAID10, RAID5 (7+1 max), and RAID6 (10+2 max) are supported
   - for SAS/SATA 7k disks, RAID6 (10+2 max) is supported
- RAID cards must use flash backed write cache
- JBOD configurations require architecture review — contact your Red Hat representative


We also mention RAID in relation to creating underlying storage:
> 1. Create the underlying physical volume and volume group
> Note that the --dataalignment value depends on the RAID type and the number
> of disks. See the Administration Guide for details.
>    # pvcreate --dataalignment 1536K /dev/sdb
>    # vgcreate RHS_vg1 /dev/sdb

We discuss alignment size in the Administration Guide: https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3.1/html-single/Administration_Guide/index.html#Brick_Configuration


Based on this information, and the information above, it looks like we have all the info we need... Sas, is there anything you'd recommend adding into the Grafton article itself?

(In reply to Laura Bailey from comment #3)

> Based on this information, and the information above, it looks like we have
> all the info we need... Sas, is there anything you'd recommend adding into
> the Grafton article itself?

Laura,

I think we need to revisit these requirements and need proper acks from eng & perf team as well.

With RHGS we do support only RAID 10 & RAID 6. But I see RAID-5 (7+1) is also mentioned under the list. I just wanted to know whether it holds true even now.
I will start a mail thread on that topic cc'ing you.

Since Sas agrees that the content requested was already in the doc, and no changes were made, I'm closing this NOTABUG.