Re: Copying between network drives

["Paul Bendall" <paul@xxxxxxxxxxxxxxxxx>]

I have a QNAP TS-109Pro single drive NAS device. It has a USB port
and eSATA port. The web interface allows a local copy from USB to
main disk, a button on the front of the device does the same thing.

I can also SSH and Telnet directly to the device and issue Linux
commands such as "cp" and "rsync" to copy data between
drives again
locally. I get a transfer rate of around 3MB/s across the SATA
interface which could be better but quicker than having to copy back
and forth across the network

So I guess not all NAS devices are equal

Paul

--- In ukha_d@xxxxxxx, "rb_ziggy" <rb.lists@...> wrote:
>
> --- In ukha_d@xxxxxxx, "domdevitto" <dom@> wrote:
> >
> > > > I'm trying to copy about 400Gb from a NAS drive to a
1Tb
USB2 disk
> > > > that is attached to the NAS unit itself (a UMAX TS201).
> > > >
> > ...
> > > > Does anyone know how to speed thinks up by cutting out
the
> > > middleman (the PC) and getting a direct disk to disk copy?
> >
> > Is the dstination USB drive readable (eg. not RAID) on other
> > Windows/Linux PCs?
> >
> > In short why not connect the USB to your PC, and read from the
NAS,
> > write locally to the disk.
> >
> > If the filesystem isn't NTFS, you may need to use a linux
box/livecd,
> > but it should still be 3-5x (maybe even 10x) quicker.
> > (because the wireless 'sends' from the NAS to the PC are
contending
> > with the 'sends' from the PC back to the NAS - and this is all
> > arbitrated by your access point).  Wireless has *very* different
> > performance characteristics to wired 'personal' Ethernet....
> >
> > Dom
> >
>
> In the end I pretty much gritted my teeth and let it get on with
it.
> It took about 2-3 days (albeit with some big gaps as I did the
copy in
> chunks).
>
> Good point about sticking the USB disk directly into the pc. I very
> nearly did this as a test but was part way through a copy when it
> occurred to me!
>
> This is clearly a weak point for all these home systems heavy
storage
>  requirements.  Really need a direct copy system that's easy to use
> and doesn't rely on pumping everything around the LAN.  The UMAX
NAS
> boxes don't provide such a facility and I don't know if others do
but
> it might be worth adding the existence of such 'backup from NAS /
> replicate' to your evaluation criteria if you are looking for one.
>
> Hope it gets cracked before I need to copy off the 1Tb drive in the
> future!
>
> Thanks
>
> RIchard
>