SATA 300 Drive Being Run At 150

Tim Daneliuk tundra at tundraware.com
Thu Aug 2 20:52:01 UTC 2007


Eduardo Meyer wrote:
>>> 4) Is your motherboard set to use AHCI for the SATA (ICH7) controller?
>>> There's reports that SATA300 is only available/used on some controllers
>>> when AHCI is used.
>> I dont know. I could not find such a similar option on BIOS, so I dont
>> know how to check it. Is it possible to be checked from system?
> 
> Just to let everyone know, for me this "AHCI" thing made the whole
> difference. On BIOS there were some options to be combined with AHCI,
> and doing the right combination made the disk get controlled as
> SATA300.
> 
> Thank you veryone, specially Jeremy Chadwick for the valuable inputs.
> 
> 

I cannot seem to find any relevant option for this on my Intel
946GZIS Mobo - and I just installed the very latest driver.
During boot, I get this:

atapci1: <Intel ICH7 SATA300 controller> port 
0x20c8-0x20cf,0x20ec-0x20ef,0x20c0-0x20c7,0x20e8-0x20eb,0x20a0-0x20af mem 
0x90204000-0x902043ff irq 19 at device 31.2 on pci0

Then I see this:

ad4: 238475MB <WDC WD2500JS-00NCB1 10.02E02> at ata2-master SATA150


However, I see this after the system comes up:

$ atacontrol cap ad4

Protocol              Serial ATA II
device model          WDC WD2500JS-00NCB1
serial number         WD-WCANKD870194
firmware revision     10.02E02
cylinders             16383
heads                 16
sectors/track         63
lba supported         268435455 sectors
lba48 supported       488397168 sectors
dma supported
overlap not supported

Feature                      Support  Enable    Value           Vendor
write cache                    yes      yes
read ahead                     yes      yes
Native Command Queuing (NCQ)   yes       -      31/0x1F
Tagged Command Queuing (TCQ)   no       no      31/0x1F
SMART                          yes      yes
microcode download             yes      yes
security                       yes      no
power management               yes      yes
advanced power management      no       no      0/0x00
automatic acoustic management  yes      no      254/0xFE        128/0x80


So .... does the fact that "Protocol Serial ATA II" is reported mean the
drive is actually running as SATA 300 regardless of what was reported
during boot?

And, yes, I have tried the speed limiting jumper on the back of the
drive both on- and off- with no difference...
-- 
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Tim Daneliuk     tundra at tundraware.com
PGP Key:         http://www.tundraware.com/PGP/



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