Dale <rdalek1...@gmail.com> [10-12-14 18:28]:
> Helmut Jarausch wrote:
> >On 12/14/10 17:42:40, Dale 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
> >>
> >If this is an eSATA connection then it works just fine out of the box.
> >It's helpful to write some UDEV rule e.g. in /etc/udev/rules.d/10-
> >local.rules, e.g.
> >SUBSYSTEMS=="scsi", ATTRS{model}=="WDC WD10EADS-65L",
> >SYMLINK="WDExt%n"
> >which generates the /dev/WDExt ... /devWDExt4 devices if there are
> >e.g. 4 partitions on that drive. Thus you can write a fixed entry
> >in your fstab using these devices.
> >
> >
>
> So this is doable then. Interesting. ^_^
>
> >>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
> >>
> >Exactly the same here, the external SATA drive is even slower
> >/dev/sdd:
> > Timing cached reads: 7498 MB in 2.00 seconds = 3750.67 MB/sec
> > Timing buffered disk reads: 262 MB in 3.02 seconds = 86.70 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
> >>
> >I'have configured my BIOS like that. It's working just fine.
> >
> >
> >>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.
> >>
> >>
> >Helmut.
> >
> >
>
> Well, according to the mobo book, AHCI "enables advanced SATA
> features". Me, I read that and I think that it may mean faster. It
> also says it is set to native by default for OS's that can handle only
> native mode controllers. I just don't want to try it without making
> sure it is not going to lead to some sort of file system problems or
> something. I did some Googling but most of the stuff I find is from
> years ago and things have changed a lot since then.
>
> Thanks for the info.
>
> Dale
>
> :-) :-)
>
In the linux kernel configuration you can set AHCI for Sata...
But whether this technically option is addtionally a wise one?
I dont know...
