[clue-tech] Fwd: external hard drive caddies with ethernet not SATA interconnect?

[Jim Ockers]

Hey Gus,

YES NOPE9 wrote:
> How soon do you want this ?
> What is your price range ?
> Do you want GigaBit Ethernet ?
>
> These might help ...
> http://hardforum.com/showthread.php?p=1035588411
> http://www.addonics.com/products/nas/NAS25HDU2.asp
> http://www.globalscaletechnologies.com/t-guruplugdetails.aspx     $129 
>   GuruPlug
>
>
> Gus
>
Thanks for that, I'd forgotten about the sheevaplug.  That is probably 
closest to what I'm looking for, because I can connect a SATA hard drive 
to the GuruPlug, and put my own kernel modules and software daemons on 
there I think.  That means the iSCSI enterprise target (iet) would 
probably work on there and would do what I want for providing a network 
block device (NBD).  As for gigabit ethernet, I think probably 100 Mbps 
ethernet is fast enough for most usage given that the rotating hard 
drive is probably the slowest part of the system anyway.  Gigabit is 
nice but you need to use jumbo frames.

Thanks for the Addonics NAS links, it looks like a pretty workable 
product too.  If I could put my own firmware on that, it might be 
perfect, but I don't see any links about loading my own firmware on 
there.  I do need the iSCSI target.  I used to have a Linksys NSLU2 
(slug) which I had my own firmware on, and I used it to make a huge 
RAID1 mirror of 2 drives, but the 200MHz Xscale CPU was so slow that it 
would take 24 hours to resync the array if it got shut down uncleanly, 
which it did regularly because of some software issue I think.  (It was 
even on a UPS.) 

-- 
Jim Ockers, P.Eng. (ockers at ockers.net)
Contact info: http://www.ockers.ca/pason.html




>
>
>
>
> Begin forwarded message:
>
> *From: *webmaster at graphmangraphics.com
> *Date: *July 2, 2010 12:24:36 PM MDT
> *To: *"CLUE technical discussion" <clue-tech at cluedenver.org>
> *Subject: **Re: [clue-tech] external hard drive caddies with ethernet 
> not SATA interconnect?*
> *Reply-To: *CLUE technical discussion <clue-tech at cluedenver.org>
>
> found this at amazon
> http://www.amazon.com/ENCL-1P-Attached-Enclosure-Ethernet-KNDM-ENCL/dp/B0032HETIC
>
>     -------- Original Message --------
>     Subject: [clue-tech] external hard drive caddies with ethernet not
>     SATA
>     interconnect?
>     From: Jim Ockers <ockers at ockers.net <mailto://ockers@ockers.net>>
>     Date: Fri, July 02, 2010 10:41 am
>     To: CLUE technical discussion <clue-tech at cluedenver.org
>     <mailto://clue-tech@cluedenver.org>>
>
>     Hi CLUEbies,
>
>     I am working on a project which requires modular storage in an
>     industrial environment.  I am thinking about trying to use
>     "external" hard drives for the data storage.  That is, the hard
>     drives will be separate modules.  I'd like to use ethernet with
>     iSCSI as the interconnect, so I can have many:many disk/server
>     relationships, and also do software RAID over the targets.
>
>     I've used the Linux iSCSI enterprise target (iet) software and
>     it's great.  I'm thinking that a disk with a little single board
>     computer or other microcontroller, with ethernet and SATA
>     interfaces, could run the iSCSI enterprise target and export the
>     disk as a network block device on the ethernet.  Ethernet gets us
>     a bunch of other spiffy advantages that we couldn't do with eSATA,
>     firewire, USB, etc.
>
>     *Do any of you know if anyone is making such a thing?*  It doesn't
>     have to be in an industrial enclosure, we can make that (it would
>     just have power and ethernet connectors on the outside of the
>     enclosure).  Inside the enclosure would be the disk and the little
>     computer, connected to each other via SATA.
>
>     We can make the system software for the little computer, including
>     the web cgi etc. for management and SMART, I just need somewhere
>     from which to source the hardware.  I looked around a bit and the
>     only external drive enclosures I see are eSATA and the like.
>
>     Thanks,
>     Jim
>
>     -- 
>     Jim Ockers, P.Eng. (ockers at ockers.net)
>     Contact info: http://www.ockers.ca/pason.html
>
>         
>
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