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October 6th, 2025 02:15
PERC H965i Front - QLC HW RAID Support
Hi All,
I am looking at purchasing an R7725 with 2x PERC 13 H965i controllers. I am potentially looking at the 30TB or 60TB NVMe disks for this, but I have seen an error that these drives are not supported under this controller. When I then add in 15TB (TLC) drives, it says they are supported. It seems like TLC is supported but not QLC, but I can't think of a technical reason for this. Do you know if this is the case, or is it an issue on OCA ? I have gone through the server technical guide, and RAID controller and there is nothing to indicate this would be an issue.
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DELL-Erman O
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October 6th, 2025 09:45
Hi,
from what I’ve seen, the PERC H965i only officially supports Dell-qualified drives.it might not show up as supported even if it technically should work. Also worth noting: the controller doesn’t support multi-namespace or multi-LUN NVMe drives, and it won’t work with SMR or EEDP-enabled NVMe either. So if your QLC drive has any of those features, that could be part of the issue.
Honestly, it seems like the problem is more about firmware-level validation and Dell’s qualification process than a hard technical limitation.
I can only see below compatible largest drives for R7725 I'm sharing with them part numbers:
Hope that helps!