Somewhat OT, but possibly useful to all Fedorites

[JD]

I have a 2.5" drive, 7200RPM and eSATA 3 (6gbps) drive.

If I put it in an enclosure that is eSATA 2 (3gbps),
how much impact does it have on the drive's performance
using the various i/o throughput benchmarking apps,
compared with if the enclosure supported 6gbps?

(assume that that controller in the computer is indeed
a 6gps esata3 controller).

[poma]

On 02.07.2014 19:24, JD wrote:
> I have a 2.5" drive, 7200RPM and eSATA 3 (6gbps) drive.
>
> If I put it in an enclosure that is eSATA 2 (3gbps),
> how much impact does it have on the drive's performance
> using the various i/o throughput benchmarking apps,
> compared with if the enclosure supported 6gbps?
>
> (assume that that controller in the computer is indeed
> a 6gps esata3 controller).

WTF, Fedorites!? :)
http://webmineral.com/data/Fedorite.shtml

Links to spec:
- mobo
- hdd
- enclosure

poma

[JD]

On Wed, Jul 2, 2014 at 2:46 PM, poma  wrote:
> On 02.07.2014 19:24, JD wrote:
> > I have a 2.5" drive, 7200RPM and eSATA 3 (6gbps) drive.
> >
> > If I put it in an enclosure that is eSATA 2 (3gbps),
> > how much impact does it have on the drive's performance
> > using the various i/o throughput benchmarking apps,
> > compared with if the enclosure supported 6gbps?
> >
> > (assume that that controller in the computer is indeed
> > a 6gps esata3 controller).
>
> WTF, Fedorites!? :)
> http://webmineral.com/data/Fedorite.shtml
>
> Links to spec:
> mobo
> hdd
> enclosure
>
> poma

​You have just violated the rules of this mailing list.
Let this be a warning before you receive a formal reprimand.

Fedorites is an old abreviation for fedora users.
If it offends you, then cancel your subscription to this list.​

[poma]

On 03.07.2014 02:08, JD wrote:
> On Wed, Jul 2, 2014 at 2:46 PM, poma  wrote:
> > On 02.07.2014 19:24, JD wrote:
> > > I have a 2.5" drive, 7200RPM and eSATA 3 (6gbps) drive.
> > >
> > > If I put it in an enclosure that is eSATA 2 (3gbps),
> > > how much impact does it have on the drive's performance
> > > using the various i/o throughput benchmarking apps,
> > > compared with if the enclosure supported 6gbps?
> > >
> > > (assume that that controller in the computer is indeed
> > > a 6gps esata3 controller).
> >
> > WTF, Fedorites!? :)
> > http://webmineral.com/data/Fedorite.shtml
> >
> > Links to spec:
> > mobo
> > hdd
> > enclosure
> >
> > poma
>
> ​You have just violated the rules of this mailing list.
> Let this be a warning before you receive a formal reprimand.

"​You have just violated the rules of this mailing list.
Let this be a warning before you receive a formal reprimand."

Can you write something even more L.A.M.E. dear Fedorista. :)
> Fedorites is an old abreviation for fedora users.
> If it offends you, then cancel your subscription to this list.​

What is the level of "creativity" required for someone to call people like minerals. :)
Besides, how did you concluded that I was offended!?
Hilarious. :)

poma

[JD]

On Wed, Jul 2, 2014 at 6:40 PM, poma  wrote:
> On 03.07.2014 02:08, JD wrote:
> > On Wed, Jul 2, 2014 at 2:46 PM, poma  wrote:
> >
> > On 02.07.2014 19:24, JD wrote:
> > > I have a 2.5" drive, 7200RPM and eSATA 3 (6gbps) drive.
> > > > If I put it in an enclosure that is eSATA 2 (3gbps),
> > > > how much impact does it have on the drive's performance
> > > > using the various i/o throughput benchmarking apps,
> > > > compared with if the enclosure supported 6gbps?
> > > >
> > > > (assume that that controller in the computer is indeed
> > > > a 6gps esata3 controller).
> > > >
> > > > WTF, Fedorites!? :)
> > >
> > > http://webmineral.com/data/Fedorite.shtml
> > >
> > > Links to spec:
> > > mobo
> > > hdd
> > > enclosure
> > >
> > > poma
> >
> > ​You have just violated the rules of this mailing list.
> > Let this be a warning before you receive a formal reprimand.
>
> "​You have just violated the rules of this mailing list.
> Let this be a warning before you receive a formal reprimand."
>
> Can you write something even more L.A.M.E. dear Fedorista. :)
> > Fedorites is an old abreviation for fedora users.
> > If it offends you, then cancel your subscription to this list.​
>
> What is the level of "creativity" required for someone to call people like
> minerals. :)
> Besides, how did you concluded that I was offended!?
> Hilarious. :)
>
> poma
>
> --
> users mailing list
> [e-mail]
> To unsubscribe or change subscription options:
> https://admin.fedoraproject.org/mailman/listinfo/users
> Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
> Have a question? Ask away: http://ask.fedoraproject.org

​Just google the words:

Fedora Fedorites

and then, try and backpedal on your ​infantile comments.

There are far more mature members on this list than imbeciles
like yourself.

[poma]

On 03.07.2014 03:01, JD wrote:
> On Wed, Jul 2, 2014 at 6:40 PM, poma  wrote:
> > On 03.07.2014 02:08, JD wrote:
> > > On Wed, Jul 2, 2014 at 2:46 PM, poma  wrote:
> > >
> > > On 02.07.2014 19:24, JD wrote:
> > > > I have a 2.5" drive, 7200RPM and eSATA 3 (6gbps) drive.
> > > > > If I put it in an enclosure that is eSATA 2 (3gbps),
> > > > > how much impact does it have on the drive's performance
> > > > > using the various i/o throughput benchmarking apps,
> > > > > compared with if the enclosure supported 6gbps?
> > > > >
> > > > > (assume that that controller in the computer is indeed
> > > > > a 6gps esata3 controller).
> > > > >
> > > > > WTF, Fedorites!? :)
> > > >
> > > > http://webmineral.com/data/Fedorite.shtml
> > > >
> > > > Links to spec:
> > > > mobo
> > > > hdd
> > > > enclosure
> > > >
> > > > poma
> > >
> > > ​You have just violated the rules of this mailing list.
> > > Let this be a warning before you receive a formal reprimand.
> >
> > "​You have just violated the rules of this mailing list.
> > Let this be a warning before you receive a formal reprimand."
> >
> > Can you write something even more L.A.M.E. dear Fedorista. :)
> > > Fedorites is an old abreviation for fedora users.
> > > If it offends you, then cancel your subscription to this list.​
> >
> > What is the level of "creativity" required for someone to call people like
> > minerals. :)
> > Besides, how did you concluded that I was offended!?
> > Hilarious. :)
> >
> > poma
> >
> > --
> > users mailing list
> > [e-mail]
> > To unsubscribe or change subscription options:
> > https://admin.fedoraproject.org/mailman/listinfo/users
> > Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
> > Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
> > Have a question? Ask away: http://ask.fedoraproject.org
>
> ​Just google the words:
>
> Fedora Fedorites
>
> and then, try and backpedal on your ​infantile comments.
>
> There are far more mature members on this list than imbeciles
> like yourself.

All the best to you as well, dear Fedorista. :)

poma

[Ian Malone]

On 3 July 2014 01:08, JD  wrote:
> On Wed, Jul 2, 2014 at 2:46 PM, poma  wrote:
> > On 02.07.2014 19:24, JD wrote:
> > > I have a 2.5" drive, 7200RPM and eSATA 3 (6gbps) drive.
> > >
> > > If I put it in an enclosure that is eSATA 2 (3gbps),
> > > how much impact does it have on the drive's performance
> > > using the various i/o throughput benchmarking apps,
> > > compared with if the enclosure supported 6gbps?
> > >
> > > (assume that that controller in the computer is indeed
> > > a 6gps esata3 controller).
> >
> > WTF, Fedorites!? :)
> > http://webmineral.com/data/Fedorite.shtml
> >
> > Links to spec:
> > mobo
> > hdd
> > enclosure
> >
> > poma
>
> You have just violated the rules of this mailing list.
> Let this be a warning before you receive a formal reprimand.
>
> Fedorites is an old abreviation for fedora users.
> If it offends you, then cancel your subscription to this list.

Honestly, I thought it was funny (for once). Do Ubuntu users have a
mineral named after them? No.
Anyway, I was unsure if your first post was a question or "I've tested
this, anyone want to guess the answer?" The extra details are
relevant.
Lastly, you may just have violated the rules of this mailing list...

[g]

On 07/03/14 02:56, Ian Malone wrote:
<>
> Lastly, you may just have violated the rules of this mailing list...

now we should all sing to the tune from "Hair",

this is the season of the violation of the list rules...

[g]

On 07/02/14 12:24, JD wrote:
> I have a 2.5" drive, 7200RPM and eSATA 3 (6gbps) drive.
>
> If I put it in an enclosure that is eSATA 2 (3gbps),
> how much impact does it have on the drive's performance
> using the various i/o throughput benchmarking apps,
> compared with if the enclosure supported 6gbps?
>
> (assume that that controller in the computer is indeed
> a 6gps esata3 controller).

you really should think about what you want to ask before you ask.

if a device is designed to operate at a level 3gbps, how can you
expect it to operate at twice it's designed speed.

a 6gbps drive connected to a 3gbps controller is not going to
have a 6gbps throughput.

all in all, nfw can you expect 6gbps.

you can 'assume' all you want.

if you want more specifics, be more specific as to specs.

also, just how can your post be useful to anyone?

fedorites ((GBWG)), or any one else?

btw, do you live in Colorado? i do not know what you were
smoking when you thought up this post, but it is way beyond
your mental being.

[Wolfgang S. Rupprecht]

g  writes:
> a 6gbps drive connected to a 3gbps controller is not going to
> have a 6gbps throughput.

And just to hammer that point home, any good modern SSD is going to have
a capacity of 550 MBytes/sec or more.  It is going to mostly saturate
that 6 Gbit/sec SATA channel.  Putting the drive on a 3 Gbit/sec channel
is going to limit you to the 280 MByte/sec range.

-wolfgang

[Roger Heflin]

It will almost certainly be fine, at worst it may be a bit slower
under the right benchmark, but unlikely to be anything that matters
unless you need it as fast as it possibly can be.

The underlying platter data rate is almost certainly less than 3Gbps.
 Check the manufacturer's web site I would suspect even if that is a
*FAST* spinning disk it is still below 200MB/second (2Gbps).     It
will be listed as a range, the lower number is the speed on the inside
of the disk and the higher is the outside of the disk.   Rotational
speed is constant, but the amount of data on a given track is more on
the outside as there is more area to encode bits and the disks place
sectors based on constant area.

On Thu, Jul 3, 2014 at 1:36 AM, g  wrote:
> On 07/02/14 12:24, JD wrote:
> > I have a 2.5" drive, 7200RPM and eSATA 3 (6gbps) drive.
> >
> > If I put it in an enclosure that is eSATA 2 (3gbps),
> > how much impact does it have on the drive's performance
> > using the various i/o throughput benchmarking apps,
> > compared with if the enclosure supported 6gbps?
> >
> > (assume that that controller in the computer is indeed
> > a 6gps esata3 controller).
>
> you really should think about what you want to ask before you ask.
>
> if a device is designed to operate at a level 3gbps, how can you
> expect it to operate at twice it's designed speed.
>
> a 6gbps drive connected to a 3gbps controller is not going to
> have a 6gbps throughput.
>
> all in all, nfw can you expect 6gbps.
>
> you can 'assume' all you want.
>
> if you want more specifics, be more specific as to specs.
>
> also, just how can your post be useful to anyone?
>
> fedorites ((GBWG)), or any one else?
>
> btw, do you live in Colorado? i do not know what you were
> smoking when you thought up this post, but it is way beyond
> your mental being.
>
> --
>
> peace out.
>
> in a world with out fences, who needs gates.
>
> tc.hago.
>
> g
>
> .
>
> --
> users mailing list
> [e-mail]
> To unsubscribe or change subscription options:
> https://admin.fedoraproject.org/mailman/listinfo/users
> Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
> Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
> Have a question? Ask away: http://ask.fedoraproject.org

[JD]

On Thu, Jul 3, 2014 at 2:00 PM, Roger Heflin  wrote:
> ​​
> ​​
> It will almost certainly be fine, at worst it may be a bit slower
> under the right benchmark, but unlikely to be anything that matters
> unless you need it as fast as it possibly can be.
>
> The underlying platter data rate is almost certainly less than 3Gbps.
>  Check the manufacturer's web site I would suspect even if that is a
> *FAST* spinning disk it is still below 200MB/second (2Gbps).     It
> will be listed as a range, the lower number is the speed on the inside
> of the disk and the higher is the outside of the disk.   Rotational
> speed is constant, but the amount of data on a given track is more on
> ​​
>
> the outside as there is more area to encode bits and the disks place
> sectors based on constant area.
>
> ​I also looked at similar analyses.

It turns out that the combinations of
sata ii enclosure, sata ii controller do indeed
throttle the wire speed of the data transfer from
a sata iii drive to the system.
But by most analyses, it has no effect on data
throughput because mechanical drives are still a long ways
from outstripping the 3gbps wire speed.

Cheers,

JD

[lee]

JD  writes:
> I have a 2.5" drive, 7200RPM and eSATA 3 (6gbps) drive.
>
> If I put it in an enclosure that is eSATA 2 (3gbps),
> how much impact does it have on the drive's performance
> using the various i/o throughput benchmarking apps,
> compared with if the enclosure supported 6gbps?
>
> (assume that that controller in the computer is indeed
> a 6gps esata3 controller).

http://blog.scoutapp.com/articles/2011/02/10/understanding-disk-i-o-when-sho...

You probably need to do some testing yourself.  Please let us know the
results.