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External
Since: Aug 24, 2007
Posts: 3
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(Msg. 1) Posted: Wed Jan 16, 2008 8:11 pm
Post subject: Confused with SATA
Archived from groups: comp>sys>ibm>pc>hardware>storage (more info?)
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If I don't install SATA (AHCI) or RAID drivers during the O/S installation
(by pressing F6), does it mean that my SATA controllers perform at a lower
speed?!?
Situation: 2 PCs running XP SP2 (one built with a Bad Axe 2 motherboard and
the other with a Bad Axe). I knew not much about AHCI (didn't plan to RAID
anyway), so I didn't think too much about HD controllers. Currently, SATA is
configured as IDE in the bios when installing XP on both systems. Device
Manager shows the Intel SATA controller.
Benchmark: I have 4 Seagate SATA 3.0 HDs on both systems and got
approximately 70 MB/s max and 170 MB/s burst rates.
The numbers seem low compared with the SATA 3.0 specification. So, I guess
my SATA controllers are underperforming....Any comments? |
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External
Since: Nov 07, 2003
Posts: 1692
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(Msg. 2) Posted: Thu Jan 17, 2008 12:01 pm
Post subject: Re: Confused with SATA [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Previously KlausK <dinga.DeleteThis@noone.com> wrote:
> If I don't install SATA (AHCI) or RAID drivers during the O/S installation
> (by pressing F6), does it mean that my SATA controllers perform at a lower
> speed?!?
Not typically. SATA does not have lower speeds than 150MB/s.
It can mean, however, that your controllers do not work at all.
> Situation: 2 PCs running XP SP2 (one built with a Bad Axe 2
> motherboard and the other with a Bad Axe).
Bad Axe?
> I knew not much about
> AHCI (didn't plan to RAID anyway),
AHCI is not RAID. It is the generic SATA controller driver,
supported by many newer SATA controllers.
> so I didn't think too much about
> HD controllers. Currently, SATA is configured as IDE in the bios
> when installing XP on both systems. Device Manager shows the Intel
> SATA controller.
If the BIOS supports IDE emulation, then you should be fine,
unless you need SATA only features such as hotplugging.
> Benchmark: I have 4 Seagate SATA 3.0 HDs on both systems and got
> approximately 70 MB/s max and 170 MB/s burst rates.
Entirely fine.
> The numbers seem low compared with the SATA 3.0 specification. So, I
> guess my SATA controllers are underperforming....Any comments?
Interface transfer rates are not disk speeds. The interface allways
needs to be faster than the disk in order not to be a bottleneck.
To find out whether disk observed speed is fine, look into
the disk datasheet for its performance numbers. 70MB/s sustained
is a typical rate for a modern HDD.
Arno |
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External
Since: Aug 24, 2007
Posts: 3
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(Msg. 3) Posted: Thu Jan 17, 2008 12:01 pm
Post subject: Re: Confused with SATA [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Arno Wagner" <me.TakeThisOut@privacy.net> wrote in message
news:5v8ubuF1jfpu5U1@mid.individual.net...
> Previously KlausK <dinga.TakeThisOut@noone.com> wrote:
>> If I don't install SATA (AHCI) or RAID drivers during the O/S
>> installation
>> (by pressing F6), does it mean that my SATA controllers perform at a
>> lower
>> speed?!?
>
> Not typically. SATA does not have lower speeds than 150MB/s.
> It can mean, however, that your controllers do not work at all.
>
>> Situation: 2 PCs running XP SP2 (one built with a Bad Axe 2
>> motherboard and the other with a Bad Axe).
>
> Bad Axe?
>
Bad Axe is a nickname for the Intel 975XBX motherboard. My HDD speed seems
fine, compared with benchmark speeds posted on the Net. >> Stay informed about: Confused with SATA |
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External
Since: Feb 01, 2006
Posts: 1570
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(Msg. 4) Posted: Thu Jan 17, 2008 2:07 pm
Post subject: Re: Confused with SATA [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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KlausK <dinga.DeleteThis@noone.com> wrote:
> If I don't install SATA (AHCI) or RAID drivers during the O/S installation (by pressing F6), does it mean that my SATA
> controllers perform at a lower speed?!?
Nope, it doesnt affect the speed.
> Situation: 2 PCs running XP SP2 (one built with a Bad Axe 2 motherboard and the other with a Bad Axe). I knew not much
> about AHCI (didn't plan to RAID anyway), so I didn't think too much about HD controllers. Currently, SATA is
> configured as IDE in the bios when installing XP on both systems. Device Manager shows the Intel SATA controller.
> Benchmark: I have 4 Seagate SATA 3.0 HDs on both systems and got approximately 70 MB/s max and 170 MB/s burst rates.
> The numbers seem low compared with the SATA 3.0 specification.
They are for all drives. The specs are just the speed of the interface cable,
and the benchmark speeds are for reading and writing data to the platters,
and that is always much slower than the data can be moved over the cable.
> So, I guess my SATA controllers are underperforming....
Nope, those numbers are fine.
> Any comments?
Wouldnt dream of commenting. >> Stay informed about: Confused with SATA |
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External
Since: Jan 18, 2008
Posts: 1
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(Msg. 5) Posted: Fri Jan 18, 2008 12:46 am
Post subject: Re: Confused with SATA [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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KlausK wrote:
> "Arno Wagner" <me RemoveThis @privacy.net> wrote in message
> news:5v8ubuF1jfpu5U1@mid.individual.net...
>> Previously KlausK <dinga RemoveThis @noone.com> wrote:
>>> If I don't install SATA (AHCI) or RAID drivers during the O/S
>>> installation
>>> (by pressing F6), does it mean that my SATA controllers perform at a
>>> lower
>>> speed?!?
>> Not typically. SATA does not have lower speeds than 150MB/s.
>> It can mean, however, that your controllers do not work at all.
>>
>>> Situation: 2 PCs running XP SP2 (one built with a Bad Axe 2
>>> motherboard and the other with a Bad Axe).
>> Bad Axe?
>>
> Bad Axe is a nickname for the Intel 975XBX motherboard. My HDD speed seems
> fine, compared with benchmark speeds posted on the Net.
>
>
I wish my BLKDP35DPM has a kickass name.
I wonder if we can make one up? >> Stay informed about: Confused with SATA |
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External
Since: Mar 20, 2007
Posts: 4
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(Msg. 6) Posted: Wed Jan 23, 2008 10:42 am
Post subject: Re: Confused with SATA [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On 2008-01-17 15:41, KlausK wrote:
> "Arno Wagner" <me.TakeThisOut@privacy.net> wrote in message
> news:5v8ubuF1jfpu5U1@mid.individual.net...
>> Previously KlausK <dinga.TakeThisOut@noone.com> wrote:
>>> If I don't install SATA (AHCI) or RAID drivers during the O/S
>>> installation
>>> (by pressing F6), does it mean that my SATA controllers perform at a
>>> lower
>>> speed?!?
>>
>> Not typically. SATA does not have lower speeds than 150MB/s.
>> It can mean, however, that your controllers do not work at all.
>>
>>> Situation: 2 PCs running XP SP2 (one built with a Bad Axe 2
>>> motherboard and the other with a Bad Axe).
>>
>> Bad Axe?
>>
> Bad Axe is a nickname for the Intel 975XBX motherboard. My HDD speed seems
> fine, compared with benchmark speeds posted on the Net.
>
>
Also later Justin asked about his motherboard:
:"I wish my BLKDP35DPM has a kickass name.
:I wonder if we can make one up? "
It also has a nickname: 'Dragontail Peak'.
(I recall Intel reuses various geographic names as nicks).
/Rolf >> Stay informed about: Confused with SATA |
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External
Since: May 12, 2006
Posts: 12
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(Msg. 7) Posted: Tue Jan 29, 2008 12:31 am
Post subject: Re: Confused with SATA [Login to view extended thread Info.]
Imported from groups: per prev. post (more info?)
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External
Since: Nov 10, 2003
Posts: 1690
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(Msg. 8) Posted: Wed Jan 30, 2008 12:57 am
Post subject: Re: Confused with SATA [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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DonLogan wrote in news:fgetp355l47svlqnsgsl0br262ifrgfd9c@4ax.com
> Arno Wagner <me.TakeThisOut@privacy.net> wrote:
>
> > Previously KlausK <dinga.TakeThisOut@noone.com> wrote:
> > > If I don't install SATA (AHCI) or RAID drivers during the O/S installation
> > > (by pressing F6), does it mean that my SATA controllers perform at a lower
> > > speed?!?
> >
> > Not typically. SATA does not have lower speeds than 150MB/s.
> > It can mean, however, that your controllers do not work at all.
> >
> > > Situation: 2 PCs running XP SP2 (one built with a Bad Axe 2
> > > motherboard and the other with a Bad Axe).
> >
> > Bad Axe?
> >
> > > I knew not much about
> > > AHCI (didn't plan to RAID anyway),
> >
> > AHCI is not RAID. It is the generic SATA controller driver,
> > supported by many newer SATA controllers.
> >
> > > so I didn't think too much about
> > > HD controllers. Currently, SATA is configured as IDE in the bios
> > > when installing XP on both systems. Device Manager shows the Intel
> > > SATA controller.
> >
> > If the BIOS supports IDE emulation, then you should be fine,
> > unless you need SATA only features such as hotplugging.
> >
> > > Benchmark: I have 4 Seagate SATA 3.0 HDs on both systems and got
> > > approximately 70 MB/s max and 170 MB/s burst rates.
> >
> > Entirely fine.
> >
> > > The numbers seem low compared with the SATA 3.0 specification. So, I
> > > guess my SATA controllers are underperforming....Any comments?
> >
> > Interface transfer rates are not disk speeds. The interface allways
> > needs to be faster than the disk in order not to be a bottleneck.
> > To find out whether disk observed speed is fine, look into
> > the disk datasheet for its performance numbers. 70MB/s sustained
>
> but he said 70MB/s max -
> I wondered what his sustained might be.
What he said: 70MB/s max
>
> > is a typical rate for a modern HDD.
> >
> > Arno >> Stay informed about: Confused with SATA |
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