Below sata controller will only work at SATA150, multiple vendor SATAII and SATAIII drives have been used. Related PR: kern/127517 from FreeBSD 7.x. I had this same behavior with 8.x on this server. atapci1: <Intel 63XXESB2 SATA300 controller> port 0xed00-0xed07,0xec80-0xec83,0xec00-0xec07,0xeb00-0xeb03,0xea80-0xea8f mem 0xfdfff400-0xfdfff7ff irq 19 at device 31.2 on pci0 Drives: ada0 at ata2 bus 0 scbus1 target 0 lun 0 ada0: <ST3160812AS 3.AAE> ATA-7 SATA 2.x device ada0: 150.000MB/s transfers (SATA, UDMA5, PIO 8192bytes) ada1 at ata2 bus 0 scbus1 target 1 lun 0 ada1: <SAMSUNG HD204UI 1AQ10001> ATA-8 SATA 2.x device ada1: 150.000MB/s transfers (SATA, UDMA5, PIO 8192bytes) ada1: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C) ada2 at ata3 bus 0 scbus2 target 0 lun 0 ada2: <SAMSUNG HD204UI 1AQ10001> ATA-8 SATA 2.x device ada2: 150.000MB/s transfers (SATA, UDMA5, PIO 8192bytes) ada2: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C) ada3 at ata3 bus 0 scbus2 target 1 lun 0 ada3: <OCZ-AGILITY3 2.15> ATA-8 SATA 3.x device ada3: Serial Number OCZ-13813M2Y24ER5311 ada3: 150.000MB/s transfers (SATA, UDMA5, PIO 8192bytes) Info from verbose boot: (unsure if relevant) pci0: child atapci1 requested type 4 for rid 0x24, but the BAR says it is an memio ata2: <ATA channel> at channel 0 on atapci1 ata3: <ATA channel> at channel 1 on atapci1 ata2: reset tp1 mask=03 ostat0=80 ostat1=50 ata2: stat0=0x50 err=0x01 lsb=0x00 msb=0x00 ata2: stat1=0x50 err=0x01 lsb=0x00 msb=0x00 ata2: reset tp2 stat0=50 stat1=50 devices=0x3 ata3: SATA reset: ports status=0x0a ata3: reset tp1 mask=03 ostat0=50 ostat1=50 ata3: stat0=0x50 err=0x01 lsb=0x00 msb=0x00 ata3: stat1=0x50 err=0x01 lsb=0x00 msb=0x00 ata3: reset tp2 stat0=50 stat1=50 devices=0x3 pciconf output: atapci1@pci0:0:31:2: class=0x01018f card=0x00231170 chip=0x26808086 rev=0x09 hdr=0x00 vendor = 'Intel Corporation' device = '631xESB/632xESB/3100 Chipset SATA IDE Controller' class = mass storage subclass = ATA How-To-Repeat: Boot machine with SATAII/III drives and they only negotiate SATA150.
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