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58 Posts

10-30-2008

Singapore

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T61 Support SATA II ?

2008-10-30, 16:18 PM

I try to upgrade my T61 harddisk to 320G WDC WD3200BEVT.

This drive was used in my Acer PC. Using the Intel Storage manager, I confirm it is working as SATA II drive (generation 2).

However, when I install this drive to my T61.  It only display as generation 1.

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8095 Posts

11-19-2007

United States of America

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Re: t61 does not operate at SATA-II speeds?!

2009-02-16, 16:08 PM

All,

 

I've investigated this issues at length through engineering and have received the following explaination of SATA data rates available on the Santa Rosa ('61) and current Montevina based systems (T400/T500, W500, W700, etc)...

 

"For Santa Rosa-based systems, the Intel ICH8 supports a SATA bus speed of up to 3.0 Gb/s. Lenovo made a design decision to prioritize maintaining compatibility with Ultrabay disk drives, which are connected via a SATA-to-PATA conversion chip which could not handle a 3.0 Gb/s SATA bus speed reliably. Therefore the system was standardized to 1.5 Gb/s.

In testing rotating media drives, our measurements show data throughput difference between 1.5 Gb/s and 3.0 Gb/s bus speed is less than 5% since the drive mechanics are the limiting throughput factor, rather than the SATA bus itself.   

For those customers who choose to purchase an after-market SSD drive capable of SATA bus speeds up to 3.0 Gb/s, the system will interface with them at 1.5 Gb/s. Lenovo's official position is that the Santa Rosa systems are working as designed.

The Montevina based systems which began shipping last year have direct SATA interfaces for both drive bays and are enabled at a system level for SATA bus speeds of 3.0 Gb/s performance. Current Lenovo drives have firmware set to 1.5 Gb/s data rates.

Exchanging these drives for after-market drives which support SATA bus of 3.0 Gb/s should provide for the higher data rate at the overall system level. Again, it should be noted that our performance measurements show less than 5% performance improvement between 1.5 Gb/s and 3.0 Gb/s SATA bus speeds for rotating drives, since the drive mechanics are the limiting throughput factor, rather than the SATA bus itself.

After-market SSDs which support SATA bus speed of 3.0 Gb/s will operate at that bus speed. Depending on the data transfer test method used, your actual data throughput from a 3.0 Gb/s SATA bus speed should be 220-250 MB/s and about 90-120MB/s throughput when running on SATA bus of 1.5 Gb/s. This is due to the bus signaling used for the SATA bus, as well as overhead for error checking."

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5884 Posts

11-24-2007

United States of America

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Re: T61 Support SATA II ?

2008-10-30, 16:24 PM

welcome to the forum!

 

the T61 supports SATA II but is limited to 1.5 Gb/sec interface speed.

 

 

edit: typo

Message Edited by erik on 11-02-2008 11:47 PM

ThinkStation P700      ThinkPad X1C7

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58 Posts

10-30-2008

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Re: T61 Support SATA II ?

2008-10-30, 16:27 PM

Thank you for your quick reply. I though this is a 965 chipset PC and should support 3.0GB?

Could this be the reason that Intel Storage manager reporting the drive as generation 1?

Message Edited by chanseng on 10-30-2008 10:00 AM
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10-30-2008

ohio

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Re: T61 Support SATA II ?

2008-10-30, 20:12 PM

Why it is limited to 150 GB/sec interface speed ?

 

I thought "ICH8M-Enhanced I/O Controller Hub" should make this work.

 

So basically SATA II will not function as it should be in T61, right?

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58 Posts

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Re: T61 Support SATA II ?

2008-10-31, 1:24 AM
Yes, quite suprised to me. Anyone got a answer for it?
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5884 Posts

11-24-2007

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Re: T61 Support SATA II ?

2008-11-01, 4:59 AM
it was done to save battery power.

ThinkStation P700      ThinkPad X1C7

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Re: T61 Support SATA II ?

2008-11-01, 14:37 PM

So it must be some control via BIOS?

I check from WD website. In fact the 250G (SATA1) and 320G(SATA2) has the same power rating.

Unless the Intel chipset takes more power when SATA2 is enabled.

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Re: T61 Support SATA II ?

2008-11-02, 20:11 PM
Is it possible that user can configure this from BIOS or Matrix Manager or anywhere else?
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58 Posts

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Re: T61 Support SATA II ?

2008-11-02, 23:27 PM
I check the BIOS and Intel Matrix manager. There is no setting for it.
Message Edited by chanseng on 11-02-2008 03:27 PM
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2029 Posts

12-02-2007

Australia

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Re: T61 Support SATA II ?

2008-11-03, 2:45 AM
------------------------------
I don't work for Lenovo
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