I have a server where I will be updating the Adaptec RAID controllers firmware and drivers soon, and so I was arcconf to check a few things.
The four disks are all the same model configured as a RAID10 volume. In running the GETCONFIG of arcconf, I was a bit surprised that one of the drive is running at 3.0gb/s instead of 6, like the other drives.
What could be the reason for this, and is there a way to get it to run at 6gb/s?
Controllers found: 1
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Controller information
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Controller Status : Optimal
Channel description : SAS/SATA
Controller Model : Adaptec 6805
Controller Serial Number :
Controller World Wide Name :
Controller Alarm : Enabled
Physical Slot : 1
Temperature : 54 C/ 129 F (Normal)
Installed memory : 512 MB
Global task priority : High
Performance Mode : Default/Dynamic
Host bus type : PCIe
Host bus speed : 5000 MHz
Host bus link width : 8 bit(s)/link(s)
Stayawake period : Disabled
Spinup limit internal drives : 0
Spinup limit external drives : 0
Defunct disk drive count : 0
Logical devices/Failed/Degraded : 1/0/0
NCQ status : Enabled
Statistics data collection mode : Enabled
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RAID Properties
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Copyback : Disabled
Background consistency check : Disabled
Background consistency check period : 30
Automatic Failover : Enabled
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Controller Version Information
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BIOS : 5.2-0 (19176)
Firmware : 5.2-0 (19176)
Driver : 7.5-0 (41013)
Boot Flash : 5.2-0 (19176)
SEEPROM (Load version/ Flash version) : 2/ 8
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Controller ZMM Information
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Status : ZMM not installed
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Logical device information
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Logical device number 0
Logical device name : VMSTORAGE01
Block Size of member drives : 512 Bytes
RAID level : 10
Unique Identifier :
Status of logical device : Optimal
Additional details : Quick initialized
Size : 3809270 MB
Parity space : 3809280 MB
Stripe-unit size : 256 KB
Read-cache setting : Enabled
Read-cache status : On
Write-cache setting : Disabled
Write-cache status : Off
Partitioned : Yes
Protected by Hot-Spare : No
Bootable : Yes
Failed stripes : No
Power settings : Disabled
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Logical device segment information
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Group 0, Segment 0 : Present (Controller:1,Connector:1,Device:0) WD-
Group 0, Segment 1 : Present (Controller:1,Connector:1,Device:1) WD-
Group 1, Segment 0 : Present (Controller:1,Connector:1,Device:2) WD-
Group 1, Segment 1 : Present (Controller:1,Connector:1,Device:3) WD-
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Physical Device information
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Device #0
Device is a Hard drive
State : Online
Block Size : 512 Bytes
Supported : Yes
Transfer Speed : SATA 6.0 Gb/s
Reported Channel,Device(T:L) : 0,4(4:0)
Reported Location : Connector 1, Device 0
Vendor : WDC
Model : WD20EFRX-68EUZN0
Firmware : 80.00A80
Serial number :
World-wide name :
Reserved Size : 3163160 KB
Used Size : 1904640 MB
Unused Size : 64 KB
Total Size : 1907729 MB
Write Cache : Disabled (write-through)
FRU : None
S.M.A.R.T. : No
S.M.A.R.T. warnings : 0
Power State : Full rpm
Supported Power States : Full rpm,Powered off
SSD : No
Temperature : Not Supported
NCQ status : Enabled
Device #1
Device is a Hard drive
State : Online
Block Size : 512 Bytes
Supported : Yes
Transfer Speed : SATA 6.0 Gb/s
Reported Channel,Device(T:L) : 0,5(5:0)
Reported Location : Connector 1, Device 1
Vendor : WDC
Model : WD20EFRX-68EUZN0
Firmware : 80.00A80
Serial number :
World-wide name :
Reserved Size : 3163160 KB
Used Size : 1904640 MB
Unused Size : 64 KB
Total Size : 1907729 MB
Write Cache : Disabled (write-through)
FRU : None
S.M.A.R.T. : No
S.M.A.R.T. warnings : 0
Power State : Full rpm
Supported Power States : Full rpm,Powered off
SSD : No
Temperature : Not Supported
NCQ status : Enabled
Device #2
Device is a Hard drive
State : Online
Block Size : 512 Bytes
Supported : Yes
Transfer Speed : SATA 3.0 Gb/s
Reported Channel,Device(T:L) : 0,6(6:0)
Reported Location : Connector 1, Device 2
Vendor : WDC
Model : WD20EFRX-68EUZN0
Firmware : 80.00A80
Serial number :
World-wide name :
Reserved Size : 3163160 KB
Used Size : 1904640 MB
Unused Size : 64 KB
Total Size : 1907729 MB
Write Cache : Disabled (write-through)
FRU : None
S.M.A.R.T. : No
S.M.A.R.T. warnings : 0
Power State : Full rpm
Supported Power States : Full rpm,Powered off
SSD : No
Temperature : Not Supported
NCQ status : Enabled
Device #3
Device is a Hard drive
State : Online
Block Size : 512 Bytes
Supported : Yes
Transfer Speed : SATA 6.0 Gb/s
Reported Channel,Device(T:L) : 0,7(7:0)
Reported Location : Connector 1, Device 3
Vendor : WDC
Model : WD20EFRX-68EUZN0
Firmware : 80.00A80
Serial number :
World-wide name :
Reserved Size : 3163160 KB
Used Size : 1904640 MB
Unused Size : 64 KB
Total Size : 1907729 MB
Write Cache : Disabled (write-through)
FRU : None
S.M.A.R.T. : No
S.M.A.R.T. warnings : 0
Power State : Full rpm
Supported Power States : Full rpm,Powered off
SSD : No
Temperature : Not Supported
NCQ status : Enabled
Most probably ATA (DATA) cable is damaged and maximum throughput of it is 3 GB/s. Try to change the cable or if it's a hot swap use the different slot. Moreover, it is doesn't make any differences in 5.4k RPM drive and you will still get decent performance, so it will make virtually NO difference in your performance.