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  * [*] PERC Crossflash PERC Crossflash
      + [ ] Introduction Introduction Table of contents
          o Thanks
          o Why
          o Preparation
          o Finding Your Card Revision
          o Extra: Disable ThirdPartyPCIFanResponse
              # Option 1: Disable ThirdPartyPCIFanResponse using
                IPMItool via Linux Shell
              # Option 2: Disable ThirdPartyPCIFanResponse using
                RACADM via SSH
          o Extra: Revision Info & Part Numbers
      + H310 Mini
      + H710 B0 Mini
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      + H710P B0 Mini
      + H710P B0 Mini Blade
      + H710P D1 Mini
      + H710P D1 Mini Blade
      + H310 Full Size
      + H710 B0 Full Size
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      + H810 D1 Full Size
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Table of contents

  * Thanks
  * Why
  * Preparation
  * Finding Your Card Revision
  * Extra: Disable ThirdPartyPCIFanResponse
      + Option 1: Disable ThirdPartyPCIFanResponse using IPMItool via
        Linux Shell
      + Option 2: Disable ThirdPartyPCIFanResponse using RACADM via
        SSH
  * Extra: Revision Info & Part Numbers

H310/H710/H710P/H810 Mini & Full Size IT Crossflashing

This guide allows you to crossflash 12th gen Dell Mini Mono & full
size cards to LSI IT firmware. Mini Mono refers to the small models
that fit in the dedicated "storage slot" on Dell servers. Because
iDRAC checks the PCI vendor values of cards in this slot before
allowing the server to boot, the generic full-size PERC crossflashing
guides do not apply. This guide however solves that issue. Technical
explanation for those curious. The following cards are supported:

  * H310 Mini Mono
  * H310 Full Size
  * H710 Mini Mono
  * H710P Mini Mono
  * H710 Full Size
  * H710P Full Size
  * H810 Full Size

Thanks

Jon Sands
fourlynx
WildOne69
Various STH Members

Why

There's two main reasons to do this, assuming you don't need the
hardware RAID functionalities of the stock firmware:

Better Performance: the plain LSI IT firmware in this guide
drastically increases the max queue depth of the adapter. For
instance on the H310 Mini, it goes from 25 with the stock Dell RAID
firmware to 600 with the LSI IT firmware. This can mean drastic
improvements in IOPS with heavy SSD configurations for example.

Different Driver: The stock Dell firmware (MegaRAID-based) uses the
MegaRAID driver in Linux/FreeBSD/etc. In some distributions this can
cause issues, for example FreeNAS has issues pulling SMART data from
drives connected to a MegaRAID controller. After crossflashing to IT
mode, the card is used by the OS via the much simpler mpt3sas driver.

Preparation

Ensure there is only one LSI-based adapter in your system. If there
are others besides the adapter you intend to flash, remove them! You
also need to disable a few BIOS settings. This step is not optional.
In your server BIOS, disable all of the following:

  * Processor Settings > Virtualization Technology
  * Integrated Devices > SR-IOV Global Enable
  * Integrated Devices > I/OAT DMA Engine

You also must set the server boot mode to BIOS, not UEFI:

  * Boot Settings > Boot Mode > Set to BIOS


        Note: If you're flashing a card on a non-Dell system, such as
        an AMD based desktop or server, make sure you find any BIOS
        settings related to IOMMU and Virtualization, and disable
        them

When you're finished with this guide, don't forget to go back and
enable Virtualization, as well as SR-IOV if you plan to use it.
Switch boot mode back to UEFI as well if you were using it
previously. But only once you've finished the guide!

Remove the RAID battery from the adapter. The IT firmware has no
cache for the battery to back, in fact the IT firmware will have no
clue the battery is there if you leave it connected. To make matters
worse, in rare cases some people observed the battery holding old
Dell code in the card's RAM and it made their crossflash process a
pain. Just unplug/remove the battery and store it somewhere in case
you return to Dell firmware.

Remove all drives connected to the PERC. This typically means any
drives in the front of the server in the hot swap bays. If you forget
to do this, the flashing process won't touch them or alter them, but
having them connected can cause the flash process to fail and you'll
be left wondering why. So pull the caddies for now!

Download the ZIP below which contains two ISOs. One is a FreeDOS live
image, the other is a Debian live image. Both come prepackaged with
all the required tools and files, and they can be booted either via
iDRAC virtual media or by burning them to a flash drive via Rufus in
WIndows, using dd in Linux, or your favorite flashing utility - up to
you. If you use Ventoy, make sure to boot the FreeDOS image in
memdisk mode.

Dell Perc Flashing ZIP
Version: v2.6
ZIP Updated: 11-17-2025
MD5: 3fa29fe46b879058b3a8db9181cb519e

Finding Your Card Revision

Boot the server off the FreeDOS ISO. Once it's booted just run the
following command, it will spit out the name and revision of your
card:

info

percflash1

    WARNING: If you are flashing a card in a blade chassis (like an
    M620 or M820), only use the "for blades" section for your card
    model below. Blade servers are the M620 and M820 for instance.
    Standard rackmount models like the R620 and R720 are not blade
    servers!

If it displays an H310 Mini proceed to the H310 Mini Guide
If it displays an H310 Adapter proceed to the H310 Full Size Guide
If it displays an H710 Mini B0 proceed to the H710 Mini (B0) Guide
If it displays an H710 Mini B0 and it's in a blade server, proceed to
the H710 Mini (B0) Blade Guide
If it displays an H710 Mini D1 proceed to the H710 Mini (D1) Guide
If it displays an H710 Mini D1 and it's in a blade server, proceed to
the H710 Mini (D1) Blade Guide
If it displays an H710P Mini B0 proceed to the H710P Mini (B0) Guide
If it displays an H710P Mini B0 and it's in a blade server, proceed
to the H710P Mini (B0) Blade Guide
If it displays an H710P Mini D1 and it's in a blade server, proceed
to the H710P Mini (D1) Blade Guide
If it displays an H710P Mini D1 proceed to the H710P Mini (D1) Guide
If it displays an H710 Adapter B0 proceed to the H710 Full Size (B0)
Guide
If it displays an H710 Adapter D1 proceed to the H710 Full Size (D1)
Guide
If it displays an H710P Adapter B0 proceed to the H710P Full Size
(B0) Guide
If it displays an H710P Adapter D1 proceed to the H710P Full Size
(D1) Guide
If it displays an H810 Adapter B0 proceed to the H810 Full Size (B0)
Guide
If it displays an H810 Adapter D1 proceed to the H810 Full Size (D1)
Guide

On your screen, the output will probably have Perc before the names
listed above - that's normal. After Perc, if it displays anything
that doesn't exactly match the above choices, contact me with a
screenshot. If you're impatient and pick the "closest one" instead,
you'll brick your card.

Extra: Disable ThirdPartyPCIFanResponse

    Warning: Use this at your own risk. Modifying thermal settings
    can cause unforeseen circumstances. If you are running your
    server in a hot environment, it's probably best to leave this
    alone

iDRAC does not expect to see a PERC card running LSI firmware - this
will cause the iDRAC to no longer see the drive temperatures. In some
cases, this will cause the error PCI3018 in the Lifecycle Log, and
the fans will be set to a static speed of about 30%. The fan speed
acts as a failsafe to prevent any disks from possibly overheating.

If you are affected by this and would like the fan behavior to return
to normal, you can disable the ThirdPartyPCIFanResponse feature by
using IPMItool or RACADM. IPMItool is built into the live image so
this will usually be the easiest option. If you don't want to use the
Linux live ISO, you can use the RACADM option to disable it via SSH.

Option 1: Disable ThirdPartyPCIFanResponse using IPMItool via Linux
Shell

IPMItool is built into the Linux live ISO in this guide. Otherwise,
you will need to install IPMItool in a Linux environment first.

To disable ThirdPartyPCIFanResponse, run the following command in the
Linux shell:

ipmitool -I open raw 0x30 0xce 0 0x16 5 0 0 0 5 0 1 0 0

To verify if the option is enabled or not, run this command in the
Linux shell:

ipmitool -I open raw 0x30 0xce 1 0x16 5 0 0 0

If you need to enable the feature again, run this command in the
Linux shell:

ipmitool -I open raw 0x30 0xce 0 0x16 5 0 0 0 5 0 0 0 0

Option 2: Disable ThirdPartyPCIFanResponse using RACADM via SSH

Connect to port 22 on your iDRAC's IP address using your preferred
SSH client (you may need to enable SSH in the iDRAC web menu under
iDRAC settings > Network > Services tab).

To disable ThirdPartyPCIFanResponse, run the following command via
the SSH client:

racadm set system.thermalsettings.ThirdPartyPCIFanResponse 0

To verify if the option is enabled or not, run this command via the
SSH client:

racadm get system.thermalsettings.ThirdPartyPCIFanResponse

If you need to enable the feature again, run this command via the SSH
client:

racadm set system.thermalsettings.ThirdPartyPCIFanResponse 1

    Note: The above commands were pulled from the following Dell
    White Paper: Disabling a Third-Party PCIe Card Cooling Response
    with Dell PowerEdge Servers

Extra: Revision Info & Part Numbers

The main difference between the B0 and D1 revisions are link speeds:
D1 will link at PCIe 3.0 instead of PCIe 2.0. This will almost
certainly never cause a bottleneck, as you'll hit the processing
limits of the SAS chipset before you run into the 20gbps full duplex
bandwidth of a 4x PCIe 2.0 slot. The difference with the P cards
(H710P) is more cache (1GB vs 512MB), but this is totally irrelevant
when running the card flashed to IT mode as the cache is not used.

Regardless, since they're the same price used, you may as well grab
the D1 revision. Note that many ebay sellers just stick popular part
numbers in the listing title, so try to verify in the actual auction
images that the label states the correct part number. Note that most
sellers omit the leading 0 so you'll get more results doing the same:

H710 B0 Full Size Part Numbers:
- These full size cards are still $$$ for some reason
- Unless you already have one just buy an actual LSI card for half
the price
- 017MXW
- 0NHD8V

H710 D1 Full Size Part Numbers:
- These full size cards are still $$$ for some reason
- Unless you already have one just buy an actual LSI card for half
the price
- 0PX45J
- 0VM02C

H710P B0 Full Size Part Numbers:
- These full size cards are still $$$ for some reason
- Unless you already have one just buy an actual LSI card for half
the price
- 0V9RNC

H710P D1 Full Size Part Numbers:
- These full size cards are still $$$ for some reason
- Unless you already have one just buy an actual LSI card for half
the price
- 07GCGT
- 0XDHXT

H810 B0 Full Size Part Numbers:
- These full size cards are still $$$ for some reason
- Unless you already have one just buy an actual LSI card for half
the price
- 0HVCWY

H810 D1 Full Size Part Numbers:
- These full size cards are still $$$ for some reason
- Unless you already have one just buy an actual LSI card for half
the price
- 0NDD93

H710 B0 Mini Part Numbers:
- 0MCR5X
- 0FRH64

H710 D1 Mini Part Numbers:
- 05CT6D

H710 B0 Mini For Blades Part Numbers:
- 0WR9NT

H710 D1 Mini For Blades Part Numbers:
- 062P9H

H710P B0 Mini For Blades Part Numbers:
- 081J2H

H710P D1 Mini For Blades Part Numbers:
- 0PK2W9

H710P B0 Mini Part Numbers:
- 0TTVVV
- 0N3V6G

H710P D1 Mini Part Numbers:
- 0TY8F9

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