Server compatibility list

Disable built-in MEGAraid controller to get the discs working. When
you disable the MEGAraid controller, the system falls back to an LSI
1030 RAID/SCSI controller (which doesn't work in IME/integrated
mirroring mode).

OpenBSD 3.8 has much better AMI MEGAraid controller support, hence it
might work in 3.8 and later releases.

When running with more than 1 CPU, disable pcibios using boot -c or
directly in the kernel via config(8). Otherwise, you will see a
message about "degraded performance". This is due to BIOS issues and
apparently flawed interrupt routning.

dmesg:

OpenBSD 3.7-current (GENERIC.MP) #96: Tue Apr 26 17:31:45 MDT 2005
    deraadt@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC.MP
cpu0: Intel(R) Xeon(TM) CPU 3.40GHz ("GenuineIntel" 686-class) 3.40 GHz
cpu0:
  FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,ACPI,MMX,
  FXSR,SSE,SSE2,SS,HTT,TM,SBF,PNI,MWAIT,EST,TM2,CNXT-ID
real mem  = 2146455552 (2096148K)
avail mem = 1952612352 (1906848K)
using 4278 buffers containing 107425792 bytes (104908K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(02) BIOS, date 12/22/04, BIOS32 rev. 0 @ 0xfd66a
pcibios0 at bios0: rev 2.1 @ 0xfd5b0/0xa50
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfde30/432 (25 entries)
pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82371FB ISA" rev 0x00)
pcibios0: PCI bus #9 is the last bus
bios0: ROM list: 0xc0000/0x9000 0xc9000/0x1000 0xca000/0x4000
mainbus0: Intel MP Specification (Version 1.4) (FSCD1889 PRIMERGY    )
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Enhanced SpeedStep disabled by BIOS
cpu0: apic clock running at 200 MHz
cpu1 at mainbus0: apid 6 (application processor)
cpu1: Intel(R) Xeon(TM) CPU 3.40GHz ("GenuineIntel" 686-class) 3.40 GHz
cpu1:
  FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,ACPI,MMX,
  FXSR,SSE,SSE2,SS,HTT,TM,SBF,PNI,MWAIT,EST,TM2,CNXT-ID
mainbus0: bus 0 is type PCI
mainbus0: bus 1 is type PCI
mainbus0: bus 2 is type PCI
mainbus0: bus 3 is type PCI
mainbus0: bus 4 is type PCI
mainbus0: bus 5 is type PCI
mainbus0: bus 6 is type PCI
mainbus0: bus 7 is type PCI
mainbus0: bus 8 is type PCI
mainbus0: bus 9 is type PCI
mainbus0: bus 10 is type ISA
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
ioapic1 at mainbus0: apid 3 pa 0xfec80000, version 20, 24 pins
ioapic2 at mainbus0: apid 4 pa 0xfec80800, version 20, 24 pins
ioapic3 at mainbus0: apid 5 pa 0xfec84000, version 20, 24 pins
ioapic4 at mainbus0: apid 8 pa 0xfec84800, version 20, 24 pins
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel E7710 SMCH" rev 0x0a
ppb0 at pci0 dev 2 function 0 "Intel E7710 MCH PCIE" rev 0x0a
pci1 at ppb0 bus 1
ppb1 at pci1 dev 0 function 0 "Intel IOP331 Channel 0" rev 0x07
pci2 at ppb1 bus 2
mpt0 at pci2 dev 8 function 0 "Symbios Logic 53c1030" rev 0x08: apic 3 int 0 (irq 11)
mpt0: IM support: 6
scsibus0 at mpt0: 16 targets
sd0 at scsibus0 targ 0 lun 0: <FUJITSU, MAP3735NC, 5207> SCSI3 0/direct fixed
sd0: 70103MB, 47996 cyl, 4 head, 747 sec, 512 bytes/sec, 143571316 sec total
sd1 at scsibus0 targ 1 lun 0: <FUJITSU, MAP3735NC, 5207> SCSI3 0/direct fixed
sd1: 70103MB, 47996 cyl, 4 head, 747 sec, 512 bytes/sec, 143571316 sec total
sd2 at scsibus0 targ 2 lun 0: <FUJITSU, MAP3735NC, 5207> SCSI3 0/direct fixed
sd2: 70103MB, 47996 cyl, 4 head, 747 sec, 512 bytes/sec, 143571316 sec total
mpt0: target 0 Synchronous at 160MHz width 16bit offset 127 QAS 1 DT 1 IU 1
mpt0: target 1 Synchronous at 160MHz width 16bit offset 127 QAS 1 DT 1 IU 1
mpt0: target 2 Synchronous at 160MHz width 16bit offset 127 QAS 1 DT 1 IU 1
mpt1 at pci2 dev 8 function 1 "Symbios Logic 53c1030" rev 0x08: apic 3 int 1 (irq 9)
mpt1: IM support: 6
scsibus1 at mpt1: 16 targets
ppb2 at pci1 dev 0 function 2 "Intel IOP331 Channel 1" rev 0x07
pci3 at ppb2 bus 3
ppb3 at pci0 dev 4 function 0 "Intel E7710 MCH PCIE" rev 0x0a
pci4 at ppb3 bus 4
bge0 at pci4 dev 0 function 0 "Broadcom BCM5721" rev 0x01, BCM5750 A1 (0x4001): apic 2
  int 16 (irq 11) address 00:30:05:80:1f:f9
brgphy0 at bge0 phy 1: BCM5750 10/100/1000baseT PHY, rev. 0
ppb4 at pci0 dev 5 function 0 "Intel E7710 MCH PCIE" rev 0x0a
pci5 at ppb4 bus 5
bge1 at pci5 dev 0 function 0 "Broadcom BCM5721" rev 0x01, BCM5750 A1 (0x4001): apic 2
  int 16 (irq 11) address 00:30:05:76:7e:29
brgphy1 at bge1 phy 1: BCM5750 10/100/1000baseT PHY, rev. 0
ppb5 at pci0 dev 6 function 0 "Intel E7710 MCH PCIE" rev 0x0a
pci6 at ppb5 bus 6
ppb6 at pci6 dev 0 function 0 "Intel PCIE-PCIE" rev 0x09
pci7 at ppb6 bus 7
ppb7 at pci6 dev 0 function 2 "Intel PCIE-PCIE" rev 0x09
pci8 at ppb7 bus 8
uhci0 at pci0 dev 29 function 0 "Intel 82801EB/ER USB" rev 0x02: apic 2 int 16 (irq 11)
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1 at pci0 dev 29 function 1 "Intel 82801EB/ER USB" rev 0x02: apic 2 int 19 (irq 10)
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2 at pci0 dev 29 function 2 "Intel 82801EB/ER USB" rev 0x02: apic 2 int 18 (irq 5)
usb2 at uhci2: USB revision 1.0
uhub2 at usb2
uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
uhci3 at pci0 dev 29 function 3 "Intel 82801EB/ER USB" rev 0x02: apic 2 int 16 (irq 11)
usb3 at uhci3: USB revision 1.0
uhub3 at usb3
uhub3: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub3: 2 ports with 2 removable, self powered
ehci0 at pci0 dev 29 function 7 "Intel 82801EB/ER USB" rev 0x02: apic 2 int 23 (irq 4)
usb4 at ehci0: USB revision 2.0
uhub4 at usb4
uhub4: Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub4: 8 ports with 8 removable, self powered
ppb8 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0xc2
pci9 at ppb8 bus 9
vga1 at pci9 dev 5 function 0 "ATI Rage XL" rev 0x27
wsdisplay0 at vga1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
ichpcib0 at pci0 dev 31 function 0 "Intel 82801EB/ER LPC" rev 0x02
pciide0 at pci0 dev 31 function 1 "Intel 82801EB/ER IDE" rev 0x02: DMA, channel 0
  configured to compatibility, channel 1 configured to compatibility
pciide0: channel 0 disabled (no drives)
atapiscsi0 at pciide0 channel 1 drive 0
scsibus2 at atapiscsi0: 2 targets
cd0 at scsibus2 targ 0 lun 0: <HL-DT-ST, DVD-ROM GDR8082N, 0002> SCSI0 5/cdrom
  removable
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
"Intel 82801EB/ER SMBus" rev 0x02 at pci0 dev 31 function 3 not configured
isa0 at ichpcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0 (mux 1 ignored for console): console keyboard, using wsdisplay0
pmsi0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pmsi0 mux 0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
sysbeep0 at pcppi0
npx0 at isa0 port 0xf0/16: using exception 16
biomask 0 netmask 0 ttymask 0
ioapic0: pin 16 shares different IPL interrupts (40..50), degraded performance
pctr: user-level cycle counter enabled
dkcsum: sd0 matched BIOS disk 80
dkcsum: warning: dup BSD->BIOS disk mapping
dkcsum: sd1 matched BIOS disk 81
dkcsum: warning: dup BSD->BIOS disk mapping
dkcsum: sd2 matched BIOS disk 82
root on sd0a
rootdev=0x400 rrootdev=0xd00 rawdev=0xd02
cpu1: Enhanced SpeedStep disabled by BIOS