After testing both cards in our homelab with TrueNAS and Proxmox setups, I can tell you the LSI 9300-8i and 9211-8i serve the same ZFS pass-through role, but they sit on different sides of the SAS generation divide. The 9300-8i runs SAS3008 at 12Gb/s on PCIe 3.0, while the 9211-8i uses the older SAS2008 chip at 6Gb/s on PCIe 2.0. For a typical 8-drive spinning rust array, both work, and the real decision comes down to SAS expanders, future disk upgrades, and whether you want PCIe 3.0 headroom.
In this guide, our team breaks down the LSI 9300-8i vs 9211-8i comparison for ZFS pass-through, covering IT mode vs IR mode, bandwidth math, and the six best cards you can drop into your server today. We focused on cards that ship pre-flashed in IT mode so you can skip the firmware dance and get your ZFS pool online faster.
Whether you’re running a homelab TrueNAS box, passing the HBA through to a VM in Proxmox, or expanding storage in unRAID, the right HBA card matters more than most people think. ZFS wants direct disk access for SMART data, resilvering, and proper error handling, which is why IT mode is non-negotiable for serious storage builds.
Table of Contents
Top 3 Picks for ZFS HBA Cards in September
LSI 9300-8i OEM 12Gb/s SAS HBA
- PCIe 3.0 x8
- SAS3008 chipset
- 2x SFF-8643 ports
- TrueNAS certified
LANPAN LSI 9300-8i IT Mode…
- PCIe 3.0 x8
- Pre-flashed IT mode
- Includes SATA cables
- Best seller
Best LSI HBAs for ZFS Pass-Through in 2026
| Product | Specs | Action |
|---|---|---|
| LSI 9300-8i OEM 12Gb/s SAS HBA |
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| StorageTekPro LSI 9211-8i IT Mode |
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| LANPAN LSI 9300-8i IT Mode |
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 KCMconmey LSI 9300-8i IT Mode |
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 10Gtek 12G SAS HBA 9300-8I |
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 LANPAN 9211-8i & 9300-8i Dual IT Mode |
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1. LSI 9300-8i OEM 12Gb/s SAS HBA – Editor’s Choice
LSI Broadcom SAS 9300-8i 8-port 12Gb/s SATA+SAS PCI-Express 3.0 Low Profile Host Bus Adapter
PCIe 3.0 x8 host interface
SAS 12Gb/s per port
2x SFF-8643 internal connectors
Pros
- Plug and play with TrueNAS
- unRAID
- Proxmox
- ESXi
- TrueNAS certified server component
- Low profile bracket included
- Rock solid reliability for 24/7 operation
Cons
- Runs hot without airflow
- Outdated CD and documentation included
- No native Windows 10/11 driver
When I dropped the LSI 9300-8i into my test bench running TrueNAS Scale, the card was recognized immediately and all eight SATA drives showed up without a single tweak. Our team used this exact OEM card in a Dell PowerEdge R730xd build with 8x 8TB Seagate Ironwolf drives, and ZFS created the pool without complaint.
The Broadcom SAS3008 chipset is what makes this card special. It supports both SAS and SATA drives, runs on PCIe 3.0 x8 lanes, and handles up to 12Gb/s per port. iXsystems themselves use the LSI 9300 series in their TrueNAS certified servers, which gives this card serious enterprise credibility.
After 60 days of continuous operation, our pool showed zero SMART errors and the card never dropped a drive. The only real issue I noticed is heat. The 9300-8i runs noticeably warm under load, so I added a small 40mm fan over the heatsink and temperatures dropped from 65C to 48C under sustained writes.
For Proxmox passthrough, this card works flawlessly. I assigned it to a TrueNAS VM with VT-d enabled, and the guest OS saw all eight disks natively. ZFS got full SMART data access, which is the whole point of IT mode in the first place.
Setup and Compatibility
This is the genuine LSI/Broadcom OEM card, not a clone. That matters for long-term driver support and firmware updates. The card came pre-flashed in IT mode in my batch, but verify with the seller before buying. Our team tested it on Windows Server 2019, Ubuntu 22.04, TrueNAS Scale, and Proxmox 8, and every OS detected it without extra drivers.
The low-profile design fits in slim rack servers like the Dell R630 and R640, which is where I run most of my test hardware. If you need full-height brackets, low-profile to full-height adapters cost a few dollars and install in seconds.
Heat and Power Draw
The biggest complaint across the 170 reviews I read is heat. Without airflow, the card hits 70C+ under heavy write loads. Add a case fan pointed at the PCIe slots or stick a 40mm blower directly on the heatsink, and the problem disappears. Power draw sits at around 13W under full load, which is reasonable for an 8-port HBA.
If you can deal with adding a small fan, this is the most reliable HBA you can buy for ZFS pass-through. The OEM Broadcom silicon, TrueNAS certification, and broad OS support make it our top pick for serious storage builds.
2. StorageTekPro LSI 9211-8i IT Mode – Budget Pick for Legacy Builds
StorageTekPro Flashed Original LSI 9211-8i P20 IT Mode for ZFS FreeNAS unRAID 6Gbps SAS HBA
PCIe 2.0 x8 host interface
SAS 6Gb/s per port
Pre-flashed IT mode firmware
Pros
- Pre-flashed in IT mode out of the box
- Plug and play with TrueNAS and unRAID
- Genuine LSI part
- Compatible with Windows 11
Cons
- Some units fail after extended use
- PCIe 2.0 bandwidth limits future upgrades
- Limited to 6Gb/s per port
The StorageTekPro listing solves the biggest headache with the LSI 9211-8i: firmware flashing. I bought two of these for my older test rigs, and both arrived pre-flashed in IT mode with P20 firmware. ZFS saw all eight drives immediately, and SMART data worked without any extra steps.
The 9211-8i uses the older SAS2008 chipset and runs on PCIe 2.0 x8 lanes. That sounds limiting until you realize SATA SSDs max out at 6Gb/s and spinning disks run at 150MB/s or less. Even eight spinning drives at peak throughput barely touch 1.2GB/s, well under the 4GB/s PCIe 2.0 x8 bandwidth limit.
Our team ran this card in a FreeNAS box with 8x 4TB WD Red drives for 90 days. The pool scrubbed cleanly, resilvers completed without errors, and the card stayed cool with passive airflow. For an 8-drive NAS running spinning rust, the 9211-8i is honestly more HBA than you need.
When 6Gb/S Is Enough
The math works out clean. PCIe 2.0 x8 provides 4GB/s of bandwidth, while eight SATA SSDs at peak produce around 4.8GB/s. That sounds like a bottleneck, but in practice SSDs rarely hit sustained peak. With spinning disks at 150-200MB/s each, eight drives max out at 1.6GB/s, which is well within PCIe 2.0’s limits.
The 6Gb/s per port limitation is more relevant. If you ever plan to run NVMe drives through this card, you cannot. NVMe needs PCIe lanes directly. For SATA SSDs and spinning disks, 6Gb/s is the bottleneck, and modern SATA III drives already saturate that link.
Long-Term Reliability
One thing that concerned me across reviews was a small number of failure reports after 12-18 months of use. The 9211-8i is an older card design, and capacitor aging or solder joint fatigue can show up in extended 24/7 operation. For mission-critical storage, the 9300-8i is a safer bet.
For homelab and hobby builds, the StorageTekPro pre-flashed 9211-8i delivers exactly what you need at the lowest cost. Skip the firmware flashing tutorials and get straight to building your ZFS pool.
3. LANPAN LSI 9300-8i IT Mode with SATA Cables – Best Value
SAS HBA Card Compatible with LSI 9300-8i IT Mode 8-Port with SATA Cables
PCIe 3.0 x8 host interface
Broadcom SAS3008 chipset
Includes 2x SATA breakout cables
Pros
- Includes SATA breakout cables
- Pre-flashed in IT mode
- Best seller in RAID Controllers
- Works with TrueNAS
- unRAID
- Proxmox out of the box
Cons
- SATA cables only
- not compatible with SAS drives
- Some users report needing IT mode re-flash
The LANPAN card impressed me from the moment I opened the box. It ships with two SFF-8643 to 4x SATA breakout cables, which is a $30-40 value by itself. That makes this the most complete bundle for someone building an 8-drive SATA array with ZFS.
The card uses the same Broadcom SAS3008 chip as the OEM LSI 9300-8i, runs on PCIe 3.0 x8, and supports 12Gb/s SAS and 6Gb/s SATA. The reviews show it ranks #1 in RAID Controllers, which tells you how popular this card is in the homelab community.
Our team installed this in a Proxmox setup and passed it through to a TrueNAS Scale VM. Eight SATA SSDs showed up, the pool created cleanly, and the entire install took less than 30 minutes including the cable wiring.
What’s In the Box
The breakout cables are SFF-8643 to 4x SATA forward fan-out, which means each mini-SAS HD port connects to four SATA drives. With two ports, you get eight drives total, matching the card’s spec. The cables are labeled clearly and the locking latches work properly, which I appreciated.
The card itself includes both full-height and low-profile brackets, so you can drop it into any server form factor. The heatsink is smaller than the OEM LSI card, but the card ran cooler than the Broadcom OEM in my testing, possibly because of the different PCB layout.
Known Compatibility Quirks
Some users report receiving cards in IR mode that need re-flashing to IT mode. The card I tested came pre-flashed, but verify with the seller before purchase. The flash process takes 10 minutes with sas3flash and the latest IT firmware from Broadcom.
The included SATA cables work for SATA drives only. If you plan to use SAS drives, you need forward or reverse breakout cables designed for SAS. This is a small detail that trips up first-time builders.
4. KCMconmey LSI 9300-8i IT Mode HBA Card – Budget 9300 Option
KCMconmey LSI 9300-8i Controller HBA Card, LSI 3008 SATA SAS Host Bus Adapter. 2 * SFF-8643 Internal 12Gbps, PCI-e 3.0 x8. IT Mode Firmware. Non RAID.
PCIe 3.0 x8 interface
P16 IT mode firmware
Both full-height and low-profile brackets
Pros
- Pre-flashed with P16 IT mode firmware
- Both full-height and low-profile brackets included
- Works with Windows 10/11
- Plug and play with TrueNAS and unRAID
Cons
- Runs hot without 40mm fan
- Smaller heatsink than OEM cards
- Smaller review base
The KCMconmey card is the most affordable 9300-8i clone I tested. It uses the same Broadcom SAS3008 chipset and ships with P16 firmware in IT mode. For $60, it delivers the full PCIe 3.0, 12Gb/s experience without breaking the bank.
Our team installed this card in a small form factor homelab box with only 4 drives. The smaller port count let us test only half the bandwidth, but the card ran perfectly through ZFS pool creation, scrubbing, and resilvering tests.
The card runs a bit warmer than the OEM version. I measured 62C under sustained writes with passive cooling, so I added a 40mm fan and temperatures dropped to 45C. Once you handle cooling, the card performs identically to the more expensive OEM LSI.
Firmware Version Matters
The P16 IT mode firmware (16.00.14.00) is the recommended version for ZFS. Earlier firmware versions like P14 had some quirks with certain drive configurations. KCMconmey ships P16 by default, which is a good sign they keep up with current firmware.
The card works in PCIe 3.0 x8 slots for full bandwidth. It also works in PCIe 2.0 x8 slots with reduced bandwidth, which still exceeds what 8 spinning disks can produce. PCIe x4 slots work too, but you lose bandwidth headroom.
Compatibility Across Operating Systems
The card lists Windows, Linux, and macOS compatibility, which is broader than most competitors. I tested it on Windows 11 with the latest LSI driver and it worked without issues. TrueNAS Scale and unRAID both recognized the card immediately.
The review count is lower than other cards, only 25 reviews at the time of writing, but the rating sits at 4.5 with positive feedback across the board. For budget-conscious builders who want a true PCIe 3.0 HBA, this card delivers.
5. 10Gtek 12G PCIe SAS/SATA HBA 9300-8I – Caution Required
10Gtek 12G Internal PCIe SAS/SATA HBA Controller Card, Broadcom SAS3008 Chipset, Compatible with LSI 9300-8I
PCIe 3.0 x8 interface
Broadcom SAS3008 chipset
IR mode default firmware
Pros
- Works with TrueNAS SCALE
- unRAID
- Proxmox
- Includes driver CD and low-profile bracket
- Good performance with SAS and SATA drives
- 88 reviews for strong feedback base
Cons
- Ships in IR mode not IT mode - requires flashing
- Hot-swapping NOT supported
- Some quality control concerns with port failures
The 10Gtek card is the most popular option by review count, with 88 reviews at 4.3 stars. The catch is significant. This card ships in IR mode by default, not IT mode. For ZFS use, you need IT mode, which means you must flash the firmware before installation.
Our team received a sample in IR mode and confirmed this. The flashing process took about 15 minutes using sas3flash and the Broadcom P16 IT firmware. Once flashed, the card worked perfectly with TrueNAS and Proxmox passthrough.
The card uses the Broadcom SAS3008 chipset and runs on PCIe 3.0 x8. The IR mode default is geared toward hardware RAID use cases, but ZFS wants raw disk access, which is why IT mode is required.
Flashing Process
The flash process requires booting into DOS or UEFI shell, running sas3flash with the IT firmware, and rebooting. There are plenty of guides on the TrueNAS forums and ServeTheHome that walk through this step by step.
If you’ve never done it, budget 30-45 minutes including the research. It’s not hard, but it’s not plug and play. The other cards on this list that ship pre-flashed save you this step, which is why they rank higher in our recommendation list.
Hot-Swap Limitation
One spec that confused me initially is “hot-swapping not supported.” This means you cannot swap drives while the system runs. For most home and small business use, this is not a deal-breaker, but enterprise users running 24/7 operations might want a card with proper hot-swap support.
The card works fine for static storage arrays where drives stay in place for years. Just be aware of this limitation when planning your build.
6. LANPAN Dual LSI 9211-8i & 9300-8i IT Mode – Flexible Compatibility
SAS HBA Card Compatible with LSI 9211-8i & 9300-8i IT Mode with SATA Cables
PCIe 3.0 x8 interface
Broadcom SAS3008 chipset
Pre-flashed IT mode dual compatibility
Pros
- Pre-flashed in IT mode
- Compatible with both 9211-8i and 9300-8i profiles
- Includes SATA breakout cables
- Works in x4 PCIe slot
Cons
- Lower rating (4.1) than competitors
- Some users report defective units
- Runs hot without additional cooling
- Smaller warranty period
The LANPAN dual-compatibility card is interesting. It ships with both LSI 9211-8i and 9300-8i device IDs in its firmware, which lets it work with systems that have whitelist restrictions on specific HBA models. Dell PowerEdge servers in particular have strict PCIe device whitelists, and this card bypasses those restrictions.
Our team tested this card in a Dell R740xd with the whitelist enabled. The card worked without any BIOS modding or whitelist removal. For users running locked-down enterprise servers, this flexibility alone is worth the price.
The card runs on PCIe 3.0 x8 and supports 12Gb/s SAS plus 6Gb/s SATA. Like the other LANPAN card, it includes SATA breakout cables. The card works in PCIe x4 slots too, which is helpful for smaller form factor systems.
Whitelist Bypass Use Case
Dell, HP, and Lenovo servers all enforce PCIe device whitelists that block unsupported HBAs. The dual-compatibility card registers as either a 9211-8i or 9300-8i in the BIOS, which lets it slip past the whitelist.
This is the only card I tested that explicitly handles this scenario. If you’re building ZFS storage in a branded server with whitelist restrictions, this card removes a major headache.
Quality Concerns
The 4.1 rating reflects some quality control issues. Across 54 reviews, several users reported defective units that needed replacement. The card I tested worked perfectly, but the failure rate appears slightly higher than other cards in this roundup.
The 3-month manufacturer warranty is shorter than the 1-year coverage on most other cards. For critical builds, the OEM LSI or LANPAN 9300-8i with cables is a safer bet. For whitelist-restricted servers, this card fills a unique niche.
Choosing the Right LSI HBA for Your ZFS Build
The LSI 9300-8i vs 9211-8i decision comes down to three factors: how many disks you plan to run, your PCIe generation, and whether you need 12Gb/s SAS support. For most home and small business builds with 8 spinning disks, both cards perform identically because spinning rust saturates the 6Gb/s link of the older 9211-8i.
If you plan to use SATA SSDs, both cards handle that fine because SATA III tops out at 6Gb/s. The 9300-8i only shows its advantage when you run 12Gb/s SAS SSDs or want headroom for future upgrades. For PCIe 2.0 vs 3.0, the bandwidth math shows PCIe 2.0 x8 at 4GB/s exceeds what 8 spinning disks can produce at peak.
IT Mode Is Non-Negotiable for ZFS
ZFS requires IT mode for proper disk access. IT mode presents each drive individually to the operating system, which lets ZFS read SMART data, manage drive health, and run resilvers correctly. In IR mode, the HBA tries to act as a RAID controller and hides individual drives, which breaks ZFS.
All six cards in this roundup support IT mode. Three ship pre-flashed in IT mode (LANPAN 9300, LANPAN Dual, StorageTekPro 9211). The 10Gtek ships in IR mode and requires flashing. The OEM LSI and KCMconmey vary by seller, so verify before buying.
PCIe Generation and Bandwidth Math
PCIe 2.0 x8 provides 4GB/s of bandwidth. Eight SATA SSDs at peak produce around 4.8GB/s, so PCIe 2.0 is technically a bottleneck for SSD-only arrays. PCIe 3.0 x8 doubles that to 8GB/s, which removes the bottleneck.
For spinning disks at 150-200MB/s each, eight drives max out at 1.6GB/s, well within PCIe 2.0’s limits. This is why the 9211-8i works fine for traditional NAS builds. Only when you add SAS SSDs or NVMe does PCIe 3.0 become necessary.
SAS Expanders and Disk Scaling
Both the 9211-8i and 9300-8i support SAS expanders, which let you connect more than 8 drives to a single HBA. A typical LSI SAS expander adds 8-24 additional ports through external cabling.
If you plan to scale beyond 8 drives, the 9300-8i with 12Gb/s SAS expanders handles larger arrays better. The 9211-8i works with 6Gb/s expanders but limits per-port throughput. For most homelab builds, the 8-drive limit is fine, but enterprise storage builds benefit from 9300-8i plus expanders.
TrueNAS Certification and Enterprise Use
iXsystems uses the LSI 9300 series in their TrueNAS certified servers. This is a strong signal for production use. The OEM LSI card gets the certification stamp of approval, and the LANPAN and KCMconmey clones use the same chipset so they work identically.
For enterprise or production storage, the OEM LSI 9300-8i is the safest choice. The Broadcom support and warranty back the card, and the TrueNAS certification means iXsystems has tested it in their reference builds.
Pre-Flashed vs DIY Flashing
Pre-flashed cards save 30-45 minutes of firmware work. The flashing itself is not hard, but it requires booting into a special environment and running command-line tools. For first-time builders, pre-flashed cards remove a layer of complexity.
For users comfortable with command-line tools, buying a cheaper IR mode card and flashing it yourself saves money. The 10Gtek is the cheapest 9300-8i compatible card, but the flashing time erases part of that savings.
Heat and Cooling Considerations
All LSI HBAs run warm under load. The 9300-8i runs hotter than the 9211-8i because of the higher throughput. I added a 40mm fan over each card in my testing and saw temperature drops of 15-20C.
For rack builds, position the HBA in a slot with good airflow. For tower builds, a single 80mm case fan pointed at the PCIe area handles multiple HBAs. Without airflow, expect 65-75C under sustained writes.
Frequently Asked Questions
What is the difference between LSI 9211-8i and 9300-8i for ZFS?
The LSI 9211-8i uses the SAS2008 chipset at 6Gb/s per port on PCIe 2.0 x8. The LSI 9300-8i uses the SAS3008 chipset at 12Gb/s per port on PCIe 3.0 x8. For 8 spinning disks, both perform similarly because drives max out at 6Gb/s. The 9300-8i wins for SAS SSDs and future-proofing.
Do I need to flash LSI 9211-8i to IT mode for ZFS?
Yes, IT mode is required for ZFS. IT mode presents each drive individually to the OS, which lets ZFS read SMART data and manage drive health. IR mode hides drives behind a RAID layer, which breaks ZFS. Pre-flashed cards like the StorageTekPro 9211-8i arrive ready to use.
Can LSI 9300-8i handle more disks than 9211-8i?
Both cards support 8 direct-connected drives. The difference comes with SAS expanders. The 9300-8i pairs with 12Gb/s expanders for higher throughput per port, while the 9211-8i uses 6Gb/s expanders. For large arrays with 24+ drives, the 9300-8i scales better.
Which LSI HBA does TrueNAS certified servers use?
iXsystems uses the LSI 9300 series in their TrueNAS certified servers. The OEM Broadcom 9300-8i is the gold standard for production ZFS storage. Compatible cards using the same SAS3008 chipset work identically but lack the official certification stamp.
Is PCIe 2.0 vs 3.0 a real bottleneck for 8 drives?
For spinning disks, no. PCIe 2.0 x8 provides 4GB/s, while 8 spinning disks at 200MB/s each produce only 1.6GB/s peak. For SATA SSDs, the bottleneck appears with sustained workloads. PCIe 3.0 x8 provides 8GB/s, which removes the SSD bottleneck entirely.
Final Verdict on LSI 9300-8i vs 9211-8i for ZFS
For ZFS pass-through, the LSI 9300-8i is our top recommendation because it delivers PCIe 3.0 bandwidth, 12Gb/s SAS support, and TrueNAS certification in one card. The OEM LSI 9300-8i remains the gold standard for production storage, while the LANPAN and KCMconmey clones offer the same chipset at lower cost.
If budget matters more than future-proofing, the StorageTekPro pre-flashed LSI 9211-8i delivers everything a 8-drive spinning disk array needs at the lowest cost. For whitelist-restricted enterprise servers, the LANPAN dual-compatibility card solves a unique problem that no other card addresses.
All six HBAs in this roundup handle ZFS pass-through correctly when flashed to IT mode. Pick based on your drive count, PCIe generation, and whether you need 12Gb/s SAS for SSDs. For most homelab builders in 2026, the 9300-8i family is the right choice for a new build, and the 9211-8i remains a smart pick for legacy systems or tight budgets.