Missing drives after swapping supermicro backplane

December 25, 2025Dec 25

I upgraded a backplane to the NVME compatible backplane that supermicro released for my RM43-320-RS chassis. I also added an LSI 9500-16i with 05-60007-00 cables. All four drives are SAS drives that were functioning normally prior to changing the backplane.

Afterwards, when I turn the server on the four drives connected to the backplane show a red light. When it boots up the array doesn't auto start and says the four drives are missing. No activity is indicated by the led's and the drives aren't listed under system devices. I tried reseating the connections and moving the HBA to a different PCIE slot, several restarts, verified Cable PN, verified HBA initializes but no drives are listed during initialization.

Can anyone assist? Being a tri-mode HBA, the SAS drives should function normally right?tower-diagnostics-20251225-0112.zip

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December 25, 2025Dec 25

Community Expert

HBA appears to be correctly initialized. Do the missing devices work if you connect them to the other HBA?

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December 25, 2025Dec 25

Author

6 hours ago, JorgeB said:
HBA appears to be correctly initialized. Do the missing devices work if you connect them to the other HBA?

I swapped the four drives that are missing in Unraid to a different backplane and they appear. Then the four drives that were moved to the backplane that is connected to the 9500 become missing.

I think it could be bificuration issue. I will see if I can enable PCIE bifurcation on the PCIE slot with the 9500. This seems logical this would be needed but I have never had to enable it the past. Will post my findings afterwards.

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December 25, 2025Dec 25

Community Expert

2 hours ago, Pstark said:
I think it could be bificuration issue.

I don't think that is the issue, since the HBA is being detected, but you can confirm the current speed/width link with, post the output from

lspci -d 1000: -vv

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December 26, 2025Dec 26

Author

10 hours ago, JorgeB said:
I don't think that is the issue, since the HBA is being detected, but you can confirm the current speed/width link with, post the output from
lspci -d 1000: -vv

with the HBA installed with no drives currently attached below are the output of that command. Im doing a large data move to remove four drives.I have a pool with unused space so i’m just going to remove them.

root@Tower:~# lspci -d 1000: -vv

01:00.0 Serial Attached SCSI controller: Broadcom / LSI SAS3008 PCI-Express Fusion-MPT SAS-3 (rev 02)

Subsystem: Dell HBA330 Adapter

Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+

Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-

Latency: 0, Cache Line Size: 64 bytes

Interrupt: pin A routed to IRQ 307

IOMMU group: 49

Region 0: I/O ports at 3000 [size=256]

Region 1: Memory at f6200000 (64-bit, non-prefetchable) [size=64K]

Region 3: Memory at f6000000 (64-bit, non-prefetchable) [size=1M]

Expansion ROM at f6100000 [disabled] [size=1M]

Capabilities: [50] Power Management version 3

Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)

Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-

Capabilities: [68] Express (v2) Endpoint, IntMsgNum 0

DevCap: MaxPayload 4096 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us

ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ SlotPowerLimit 0W TEE-IO-

DevCtl: CorrErr- NonFatalErr- FatalErr+ UnsupReq-

RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+ FLReset-

MaxPayload 512 bytes, MaxReadReq 512 bytes

DevSta: CorrErr+ NonFatalErr- FatalErr- UnsupReq+ AuxPwr- TransPend-

LnkCap: Port #0, Speed 8GT/s, Width x8, ASPM L0s, Exit Latency L0s <2us

ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+

LnkCtl: ASPM Disabled; RCB 64 bytes, LnkDisable- CommClk+

ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- FltModeDis-

LnkSta: Speed 8GT/s, Width x8

TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-

DevCap2: Completion Timeout: Range BC, TimeoutDis+ NROPrPrP- LTR-

10BitTagComp- 10BitTagReq- OBFF Not Supported, ExtFmt- EETLPPrefix-

EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-

FRS- TPHComp- ExtTPHComp-

AtomicOpsCap: 32bit- 64bit- 128bitCAS-

DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-

AtomicOpsCtl: ReqEn-

IDOReq- IDOCompl- LTR- EmergencyPowerReductionReq-

10BitTagReq- OBFF Disabled, EETLPPrefixBlk-

LnkCap2: Supported Link Speeds: 2.5-8GT/s, Crosslink- Retimer- 2Retimers- DRS-

LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-

Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-

Compliance Preset/De-emphasis: -6dB de-emphasis, 0dB preshoot

LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete+ EqualizationPhase1+

EqualizationPhase2+ EqualizationPhase3+ LinkEqualizationRequest-

Retimer- 2Retimers- CrosslinkRes: unsupported, FltMode-

Capabilities: [a8] MSI: Enable- Count=1/1 Maskable+ 64bit+

Address: 0000000000000000 Data: 0000

Masking: 00000000 Pending: 00000000

Capabilities: [c0] MSI-X: Enable+ Count=96 Masked-

Vector table: BAR=1 offset=0000e000

PBA: BAR=1 offset=0000f000

Capabilities: [100 v2] Advanced Error Reporting

UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP-

ECRC- UnsupReq- ACSViol- UncorrIntErr- BlockedTLP- AtomicOpBlocked- TLPBlockedErr-

PoisonTLPBlocked- DMWrReqBlocked- IDECheck- MisIDETLP- PCRC_CHECK- TLPXlatBlocked-

UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP-

ECRC- UnsupReq- ACSViol- UncorrIntErr- BlockedTLP- AtomicOpBlocked- TLPBlockedErr-

PoisonTLPBlocked- DMWrReqBlocked- IDECheck- MisIDETLP- PCRC_CHECK- TLPXlatBlocked-

UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+

ECRC- UnsupReq- ACSViol- UncorrIntErr+ BlockedTLP- AtomicOpBlocked- TLPBlockedErr-

PoisonTLPBlocked- DMWrReqBlocked- IDECheck- MisIDETLP- PCRC_CHECK- TLPXlatBlocked-

CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+ CorrIntErr- HeaderOF-

CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+ CorrIntErr- HeaderOF-

AERCap: First Error Pointer: 00, ECRCGenCap- ECRCGenEn- ECRCChkCap- ECRCChkEn-

MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-

HeaderLog: 04000001 0000200f 01080000 a11af183

Capabilities: [1e0 v1] Secondary PCI Express

LnkCtl3: LnkEquIntrruptEn- PerformEqu-

LaneErrStat: 0

Capabilities: [1c0 v1] Power Budgeting <?>

Capabilities: [190 v1] Dynamic Power Allocation <?>

Capabilities: [150 v1] Single Root I/O Virtualization (SR-IOV)

IOVCap: Migration- 10BitTagReq- IntMsgNum 0

IOVCtl: Enable- Migration- Interrupt- MSE- ARIHierarchy+ 10BitTagReq-

IOVSta: Migration-

Initial VFs: 16, Total VFs: 16, Number of VFs: 0, Function Dependency Link: 00

VF offset: 1, stride: 1, Device ID: 0097

Supported Page Size: 00000553, System Page Size: 00000001

Region 0: Memory at 0000000000000000 (64-bit, non-prefetchable)

Region 2: Memory at 0000000000000000 (64-bit, non-prefetchable)

VF Migration: offset: 00000000, BIR: 0

Capabilities: [148 v1] Alternative Routing-ID Interpretation (ARI)

ARICap: MFVC- ACS-, Next Function: 0

ARICtl: MFVC- ACS-, Function Group: 0

Kernel driver in use: mpt3sas

Kernel modules: mpt3sas

42:00.0 Serial Attached SCSI controller: Broadcom / LSI SAS3416 Fusion-MPT Tri-Mode I/O Controller Chip (IOC) (rev 01)

Subsystem: Lenovo ThinkSystem 430-16i SAS/SATA 12Gb HBA

Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+

Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-

Latency: 0, Cache Line Size: 64 bytes

Interrupt: pin A routed to IRQ 340

IOMMU group: 32

Region 0: Memory at 28080f00000 (64-bit, prefetchable) [size=1M]

Region 2: Memory at 28080e00000 (64-bit, prefetchable) [size=1M]

Region 4: Memory at b1500000 (32-bit, non-prefetchable) [size=1M]

Region 5: I/O ports at 6000 [size=256]

Expansion ROM at b1600000 [disabled] [size=256K]

Capabilities: [40] Power Management version 3

Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)

Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-

Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+

Address: 0000000000000000 Data: 0000

Masking: 00000000 Pending: 00000000

Capabilities: [70] Express (v2) Endpoint, IntMsgNum 0

DevCap: MaxPayload 1024 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us

ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ SlotPowerLimit 75W TEE-IO-

DevCtl: CorrErr- NonFatalErr- FatalErr+ UnsupReq-

RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+ FLReset-

MaxPayload 512 bytes, MaxReadReq 512 bytes

DevSta: CorrErr+ NonFatalErr- FatalErr- UnsupReq+ AuxPwr- TransPend-

LnkCap: Port #0, Speed 8GT/s, Width x8, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us

ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+

LnkCtl: ASPM Disabled; RCB 64 bytes, LnkDisable- CommClk+

ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- FltModeDis-

LnkSta: Speed 8GT/s, Width x8

TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-

DevCap2: Completion Timeout: Range ABCD, TimeoutDis+ NROPrPrP- LTR-

10BitTagComp- 10BitTagReq- OBFF Not Supported, ExtFmt- EETLPPrefix-

EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-

FRS- TPHComp+ ExtTPHComp-

AtomicOpsCap: 32bit- 64bit- 128bitCAS-

DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-

AtomicOpsCtl: ReqEn-

IDOReq- IDOCompl- LTR- EmergencyPowerReductionReq-

10BitTagReq- OBFF Disabled, EETLPPrefixBlk-

LnkCap2: Supported Link Speeds: 2.5-8GT/s, Crosslink- Retimer- 2Retimers- DRS-

LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance- SpeedDis-

Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-

Compliance Preset/De-emphasis: -6dB de-emphasis, 0dB preshoot

LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete+ EqualizationPhase1+

EqualizationPhase2+ EqualizationPhase3+ LinkEqualizationRequest-

Retimer- 2Retimers- CrosslinkRes: unsupported, FltMode-

Capabilities: [b0] MSI-X: Enable+ Count=16 Masked-

Vector table: BAR=0 offset=00002000

PBA: BAR=0 offset=00004800

Capabilities: [d0] Vital Product Data

Product Name: ThinkSystem 430-16i SAS/SATA 12Gb HBA

Read-only fields:

[UU] Unknown: 31 33 33 41 38 44 36 45 45 34 34 44 34 46 30 43 39 39 44 36 36 35 30 43 34 36 34 45 35 37 37 35

[SH] Unknown: 34 33 30 2d 31 36 69 20 53 41 53 2f 53 41 54 41 20 48 42 41

[MN] Manufacture ID: Lenovo

[S1] Unknown: 4c 34 53 54 32 32 53 53 47 30 30

[S2] Unknown: 53 50 43 30 38 33 31 33 35 39 20 20 20 20 20 20

[PN] Part number: SR17A04583

[MO] Unknown: 53 41 53 33 34 31 36

[FN] FRU: 01KN501

[FO] Unknown: 4e 2f 41

[MD] Unknown: 30 38

[CL] Unknown: 32 32

[PT] Unknown: 30 39

[OP] Unknown: 4e 2f 41

[RV] Reserved: checksum good, 0 byte(s) reserved

End