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From: Dale <rdalek1967@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Questions about SATA and hot plugging.
Date: Tue, 14 Dec 2010 11:49:00 -0600	[thread overview]
Message-ID: <4D07AE0C.5020305@gmail.com> (raw)
In-Reply-To: <AANLkTinx5GN=toPc82YuLKGUnq3oSWAP+PAxFn4gRSpJ@mail.gmail.com>

Mark Knecht wrote:
> On Tue, Dec 14, 2010 at 9:13 AM, Dale<rdalek1967@gmail.com>  wrote:
>    
>> Mark Knecht wrote:
>>      
>>> On Tue, Dec 14, 2010 at 8:42 AM, Dale<rdalek1967@gmail.com>    wrote:
>>>
>>>        
>>>> Hi,
>>>>
>>>> I got one more hard drive to move over and it is SATA.  Question one, can
>>>> the new mobo's do hot plugging for SATA drives?  I have a plug on the
>>>> front
>>>> of the case and was wondering since it is on the front if they can be hot
>>>> swapped or if I need to shutdown then hook it up.  If I can hot swap,
>>>> where
>>>> does the power come from?  I know the drives I put in the case have a
>>>> separate power connection.  How's that work exactly?  Is that just for
>>>> external drives that have their own power?
>>>>
>>>> I have two dries in here already.  One I bought and one that was donated.
>>>>   This is what hdparm reports:
>>>>
>>>> fireball ~ # hdparm -tT /dev/sda
>>>>
>>>> /dev/sda:
>>>>   Timing cached reads:   6788 MB in  2.00 seconds = 3395.32 MB/sec
>>>>   Timing buffered disk reads:  328 MB in  3.01 seconds = 109.06 MB/sec
>>>> fireball ~ # hdparm -tT /dev/sdb
>>>>
>>>> /dev/sdb:
>>>>   Timing cached reads:   6736 MB in  2.00 seconds = 3367.58 MB/sec
>>>>   Timing buffered disk reads:  324 MB in  3.01 seconds = 107.69 MB/sec
>>>> fireball ~ #
>>>>
>>>> Is that about normal?  The mobo is 3Gbs/sec and the drives are too.
>>>>   Shouldn't they be faster than that?  I read at one time that SATA is
>>>> basically plug up and it works.  Just checking if there is a setting I
>>>> need
>>>> to change.
>>>>
>>>> Related to the above, in the BIOS, it is set to Native IDE.  Should that
>>>> be
>>>> set to AHCI instead?  Is that why it is slower than expected?  Is that
>>>> good
>>>> to go with Linux as well?  I have this set in the kernel and built in as
>>>> usual:
>>>>
>>>> AHCI SATA support
>>>>
>>>> Let me know if I am somewhat right on anything.  Oh, I decided to name
>>>> the
>>>> new rig fireball instead of lightening.  ;-)  You may notice that in the
>>>> paste up above.
>>>>
>>>> Thanks.
>>>>
>>>> Dale
>>>>
>>>>          
>>> The SATA spec allows for hot plugging, so technically yes, but it also
>>> assumes the drives are in some sort of container so that power and
>>> signals are applied at the right time.
>>>
>>> The plug on the front of your case is probably eSATA which looks
>>> similar but has some small changes. What you want to do is figure out
>>> which of your MB SATA ports are eSATA compatible and then run one of
>>> those channels to the connector at the front inside your case.
>>> Typically SATA drives are converted to eSATA external drives by
>>> putting them in a case you can get at most computer shops for<    $30 or
>>> so.
>>>
>>> Hope this helps,
>>> Mark
>>>
>>>
>>>        
>> I did hook the eSATA cable that goes to the front of the case to the eSATA
>> connector on the mobo.  Thing is, I think they are all eSATA compatible tho.
>>   I think that is what I read in the mobo book.  Yea, I read the book.  I
>> even followed the instructions for the CPU cooler too.  lol
>>
>> I was thinking it needed some sort of power for the drive tho.  I didn't
>> think it was like USB stuff.
>>
>> Thanks for the info.
>>
>> Dale
>>      
> One of my MBs had 6 SATA connectors but only two were eSATA compatible.
>
> Power for my eSATA drive is supplied by the case.
>
> Hope this helps,
> Mark
>
>    

It does.  It was the one on the front that made me curious tho.  I have 
used USB for a while but was curious about how it works on the front 
with no power for it.   I think I'll leave that one alone for now.  May 
get brave another day tho.

Thanks.

Dale

:-)  :-)



  reply	other threads:[~2010-12-14 17:52 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-14 16:42 [gentoo-user] Questions about SATA and hot plugging Dale
2010-12-14 16:57 ` Mark Knecht
2010-12-14 17:13   ` Dale
2010-12-14 17:36     ` Mark Knecht
2010-12-14 17:49       ` Dale [this message]
2010-12-14 20:17         ` Volker Armin Hemmann
2010-12-15 11:52           ` Dale
2010-12-15  0:02   ` Stroller
2010-12-15 11:54     ` Dale
2010-12-15 17:49       ` Volker Armin Hemmann
2010-12-15 18:15         ` Mark Knecht
2010-12-15 18:24           ` Dale
2010-12-15 18:39             ` Mark Knecht
2010-12-15 18:42             ` Volker Armin Hemmann
2010-12-15 19:50               ` Dale
2010-12-15 16:59     ` Andrea Conti
2010-12-16  6:10       ` Stroller
2010-12-14 17:01 ` Helmut Jarausch
2010-12-14 17:20   ` Dale
2010-12-14 17:34     ` meino.cramer
2010-12-14 17:50       ` Dale
2010-12-14 17:40     ` Mark Knecht
2010-12-14 17:10 ` meino.cramer
2010-12-14 17:47   ` Dale
2010-12-14 18:28     ` meino.cramer
2010-12-14 18:34       ` Jarry
2010-12-14 18:48         ` meino.cramer
2010-12-16  0:24       ` James Wall
2010-12-15 16:39   ` Andrea Conti
2010-12-15 19:35     ` [gentoo-user] " Grant Edwards
2010-12-15 19:58       ` Mark Knecht
2010-12-15 20:07         ` Volker Armin Hemmann
2010-12-15 20:41           ` Mark Knecht
2010-12-15 21:02             ` Volker Armin Hemmann
2010-12-15 21:16               ` Alan McKinnon
2010-12-15 21:46                 ` Mark Knecht
2010-12-16  7:31                   ` Alan McKinnon
2010-12-16 15:29                     ` Volker Armin Hemmann
2010-12-16 15:47                       ` Mark Knecht
2010-12-16 18:05                         ` Dale
2010-12-16 18:31                           ` Mark Knecht
2010-12-16 19:10                             ` Dale
2010-12-16 19:48                               ` Mark Knecht
2010-12-16 20:08                                 ` Grant Edwards
2010-12-16 20:24                                 ` Dale
2010-12-16 20:42                                   ` Mark Knecht
2010-12-16 21:22                                     ` Dale
2010-12-27 17:31                                     ` Volker Armin Hemmann
2010-12-27 17:45                                       ` Mark Knecht
2010-12-27 18:11                                         ` Volker Armin Hemmann
2010-12-16 22:05                         ` Volker Armin Hemmann
2010-12-16  6:21         ` Stroller
2010-12-16  6:23       ` Stroller
2010-12-16  7:33         ` Alan McKinnon

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