Thanks for the details.  So, there really isn't that big of a difference
from the 3494 to the 3584 other than the lack of an internal PC/LM and a
redesigned, mostly plastic picker/gripper mechanism.


On Tue, Apr 30, 2013 at 11:03 AM, David Bronder <david-bronder AT uiowa DOT 
edu>wrote:

> The only non-drive external cables to the library would be Ethernet for
> access to the web interface and either an analog phone line for the
> call-home modem or a second Ethernet for the TS3000 if you have one.
> (We missed the phone line requirement at first, so we had to scramble
> to get those in.)
>
> Internally, each drive has a couple power connections and one or two
> RS422 or similar connections to a library node card, plus one or two
> fibre connections (newer LTO and 3592 support dual connections) to the
> "patch panel" (just a piece of sheet metal to snap in LC-LC couplers).
> IBM will be responsible for connections from the back of the patch, and
> you will be responsible for external connections to the patch.
>
> With multiple drive frames, you will also have connections from one
> frame to the next to connect up the node cards.  I believe they are
> daisy-chained, so any given frame would only have one cross-frame cable
> going each direction.  (Mine are both 2-frame libraries, but the second
> is an S24, aka HD frame, so there is no node card in use.)
>
> =Dave
>
> Zoltan Forray wrote:
> >
> > That is what I understood from previous emails but wanted to make sure
> but
> > someone here keeps insisting there should be another cable just for the
> > library.
> >
> > As for internally, how does the library talk to the drives/canisters?  In
> > the 3494, it used RS422 cables from the drive cages/frames to the RTIC
> > cards.  My understanding is there is a fibre patch-panel in each D-frame
> to
> > which you connect 2m cables to the drives and then I guess to connect the
> > fibre cables from the SAN switch to this same patch-panel?  I really
> wish I
> > had the "maintenance manual" for the 3584!
> >
> >
> > On Tue, Apr 30, 2013 at 10:06 AM, Prather, Wanda <Wanda.Prather AT icfi DOT 
> > com
> >wrote:
> >
> > > No.
> > > You can define the control path on any (and all) drives.
> > > The 2nd cable is if you want to have path failover configured on the
> drive.
> > >
> > > -----Original Message-----
> > > From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On 
> > > Behalf
> Of
> > > Zoltan Forray
> > > Sent: Tuesday, April 30, 2013 10:04 AM
> > > To: ADSM-L AT VM.MARIST DOT EDU
> > > Subject: Re: [ADSM-L] Equating current 3494 configuration to TS3500
> > >
> > > One more question about this.  The book isn't very clear about whether
> a
> > > separate fibre cable is needed between the library and our SAN switch
> for
> > > communications. From the book:
> > >
> > > *The host server attaches to the library by using fiber cables that
> > > connect directly to a drive canister or through the library's patch
> panel.*
> > >
> > > Does that mean a separate fibre cable goes to the second connector of
> the
> > > 3592 designated as the "control path" drive(s)?
> > >
> [...trimming the rest...]
>
>
> --
> Hello World.                                David Bronder - Systems
> Architect
> Segmentation Fault                                      ITS-EI, Univ. of
> Iowa
> Core dumped, disk trashed, quota filled, soda warm.
> david-bronder AT uiowa DOT edu
>



--
*Zoltan Forray*
TSM Software & Hardware Administrator
Virginia Commonwealth University
UCC/Office of Technology Services
zforray AT vcu DOT edu - 804-828-4807
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