[CentOS] Help setting up external drive via Firewire

Noob Centos Admin centos.admin at gmail.com
Wed Aug 13 09:10:23 UTC 2008


On Wed, Aug 13, 2008 at 4:50 PM, Laurence Alexander Hurst <
L.A.Hurst at lboro.ac.uk> wrote:

> 2 things jump out:
>        1. As has already been pointed out that is not a Centos Plus kernel.
> Did you reboot after installing the new kernel? (You have to reboot for a
> kernel update in order to be running the new kernel).


Thanks Akemi & Lawrence for pointing out the obvious that I was blind to! :D
I overlooked the exclude line for the Centos Update repo so yum took the
wrong kernel update instead. Now downloading  2.6.18-92.1.10.el5.centos.plus
and hopes everything will work after this.



>
>        2. 1 hour to copy 100GB sounds like a very good speed. Obviously the
> eSATA interface will be the fastest as it will the the same as having it
> plugged directly into the SATA controller. For reference I recently copied
> 73GB from an internal SATA drive to an internal (software) raid0 array (made
> up of 2 SATA disks), and that took 1.5hours.


The first day's transfer just completed and it took about 1hr 10 minutes for
101GB, from du -h, which I think is in terms of 1024. So that's like
24.6MB/s which admittedly appears to be around the maximum real world data
transfer rate for USB 2.0. According to some reviews of this WD model, the
Firewire was supposedly up to 1/3 faster (they had figures of 35MBps vs
44Mbps).

So I am hoping to see a similar speed from the Firewire here to save some 20
minutes of waiting time, a whole week's backup would be almost 2.5 hours of
savings!

Going to reboot the system now with the new kernel and hopes I don't lose
the NIC or something :D
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