PERC H740P Virtual Disk Reconfigure Option Not Present

Reconfiguring a RAID 10 volume is not a feature that our PERCs support at this time. I'll confirm this by reading into the latest on the H740P, but I would expect you to need to recreate the volume.

This issue occurs in the BIOS and OpenManage, so I don't think ensuring OpenManage is fully functional will fix my issue. Also, I installed OpenManage today, so it is unlikely that it is facing issues already

I just used a test R840 and was able to reconfigure the RAID10 I created on its H740P. Setting OMSA aside, I would double check the BIOS, iDRAC, and PERC firmware. Provided everything is on the latest, the next thing you could try is a power drain, since based on your description, I can't see any reason for this operation to refuse to run.

Thats a fairly new and up to date version of OpenManage, so the version should be fine. You might check the iDRAC version, since OpenManage just gets most of it's information through it. If that doesn't work, try restarting the 4 DSM services. These are the services that power OpenManage and restarting them fixes a lot of OMSA behaviors.

Many thanks for testing it out.

When you reconfigured the virtual disk, did it contain an operating system, e.g CentOS?

I will try updating the firmware, BIOS, driver etc. I will then try a power drain.

It didn't. The presence of an OS shouldn't be a problem, but partitions in the filesystem can be sometimes. The most common issue I see with people that want to expand an array, but can't is that the array is sliced. Byt this I mean that at least 1 of the disks in array X is in another array, at the same time.

I see. A default CentOS install is inherently partitioned, e.g the boot partition, swap partition etc. Perhaps this is the issue?

Also, if I eventually get the reconfiguration working, will that result in data loss from the existing virtual disk?

When i say that the file systems can sometimes be problems, I more so mean the expansion of an existing file system into the additional raw space. Most of the time, it's when someone is on a Windows box and using MBR, trying to extend an extended partition into raw space was something Windows didn't like.

As for data loss, you shouldn't experience any. We always recommend to people to check their backups before messing with a RAID volume though, in the unlikely event that things go sideways.

I have updated the BIOS and CPLD to the latest versions and sadly the "reconfigure" option is still not present.

I am going to try to copy the contents of the original virtual disk to the new one (that i mentioned in my original post) and see if the reconfiguration option is still present after doing so.

Having the same problem.  Latest firmware, drivers, bios.  I'm trying to add a drive to an existing raid-6 array.  I do not see the reconfigure option reference in this guide.  https://www.dell.com/support/kbdoc/en-us/000116592/how-reconfigure-a-virtual-disk-or-add-additional-hard-drives

Hello, in order to help yo further could you give us more information on
Server model, 
BIOS/PERC versions 
how many drives in raid 6 
and 
model or p/n of the existing drives and ones you added 
Respectfully,