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
:-) :-)
