Привет.
Есть компутер с тремя дисками:
1. SSD Intel
2. Seagate ST2000VX002-1AH1
3. Seagate ST2000VX002-1AH1

То есть 2. и 3. - одинаковые.
Стоит CentOS 5.6

По dmesg видно, что 1 и 2 работают на скорости 3.0Gbps, а вот 3.- почему-то на 1.5

ata1: SATA max UDMA/133 abar m8192@0xdfff6000 port 0xdfff6100 irq 233
ata2: SATA max UDMA/133 abar m8192@0xdfff6000 port 0xdfff6180 irq 233
ata3: SATA max UDMA/133 abar m8192@0xdfff6000 port 0xdfff6200 irq 233
ata4: SATA max UDMA/133 abar m8192@0xdfff6000 port 0xdfff6280 irq 233
ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata1.00: ATA-7: INTEL SSDSA2M040G2GC, 2CV102HD, max UDMA/133
ata1.00: 78165360 sectors, multi 16: LBA48 NCQ (depth 31/32)
ata1.00: configured for UDMA/133
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2.00: ATA-8: ST2000VX002-1AH166, CV01, max UDMA/133
ata2.00: 3907029168 sectors, multi 16: LBA48 NCQ (depth 31/32)
ata2.00: configured for UDMA/133
ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)  <--- вон оно
ata3.00: ATA-8: ST2000VX002-1AH166, CV01, max UDMA/133
ata3.00: 3907029168 sectors, multi 16: LBA48 NCQ (depth 31/32)
ata3.00: configured for UDMA/133
ata4: SATA link down (SStatus 0 SControl 300)
  Vendor: ATA       Model: INTEL SSDSA2M040  Rev: 2CV1
  Type:   Direct-Access                      ANSI SCSI revision: 05
SCSI device sda: 78165360 512-byte hdwr sectors (40021 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
SCSI device sda: 78165360 512-byte hdwr sectors (40021 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
sda: sda1 sda2 sda3
sd 0:0:0:0: Attached scsi disk sda
  Vendor: ATA       Model: ST2000VX002-1AH1  Rev: CV01
  Type:   Direct-Access                      ANSI SCSI revision: 05
SCSI device sdb: 3907029168 512-byte hdwr sectors (2000399 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 3a 00 00
SCSI device sdb: drive cache: write back
SCSI device sdb: 3907029168 512-byte hdwr sectors (2000399 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 3a 00 00
SCSI device sdb: drive cache: write back
sdb: sdb1
sd 1:0:0:0: Attached scsi disk sdb
  Vendor: ATA       Model: ST2000VX002-1AH1  Rev: CV01
  Type:   Direct-Access                      ANSI SCSI revision: 05
SCSI device sdc: 3907029168 512-byte hdwr sectors (2000399 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 3a 00 00
SCSI device sdc: drive cache: write back
SCSI device sdc: 3907029168 512-byte hdwr sectors (2000399 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 3a 00 00
SCSI device sdc: drive cache: write back
sdc: sdc1
sd 2:0:0:0: Attached scsi disk sdc

# dmesg | grep Gbps
ahci 0000:00:09.0: AHCI 0001.0100 32 slots 4 ports 3 Gbps 0xf impl IDE mode
ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)

Собственно, что сделать, чтоб ata3 тоже на 3 Гбпс работало?

Спасибо.