[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference decwet::networker

Title:NetWorker
Notice:kits - 12-14, problem reporting - 41.*, basics 1-100
Moderator:DECWET::RANDALL.com::lenox
Created:Thu Oct 10 1996
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:750
Total number of notes:3361

501.0. "TL8x0 shared in heterogeneous environment" by GOYA::GALAN () Tue Mar 18 1997 10:56

    As far as I know, the TL8x0 can be attached to a system using more
    than 1 bus, but we can not configure the TL in a SCSI cluster (NSR doesn't
    support the tape and changer devices on a shared bus).
    My question is about a heterogeneous environment, not cluster, so not
    shared bus.
      
    Something like this:
      
                                       ------- 
                                      | TL8xx |
                                      |       |
                    ------             -------                    --------  
                   |HP    |             | | |                    |DEC Unix|  
                   |Unix  |             | | +--------------------|system  |    
                   |system|-------------|-+                       -------- 
                    ------              |   
                                        | 
                                        | 
                                      -------
                                      | DEC  | 
                                      | WNT  | 
                                       ------
    where each system can use the DLT tapes independently, 
    Maybe one of the system can centralise the dialog to the TL8xx for
    mounting, labeling the tape, and then, after that, each system will use its bus
    direct to the tape, to do the backup.
      
      - Is this configurable at this moment? With SLS, NSR,....?
      - If not, is Digital going to have any solution to this in the next
    future?
      
      
          Ana Galan
          PreSales Technical Support Scotland
          E-mail: [email protected]
    
T.RTitleUserPersonal
Name
DateLines
501.1DECWET::LENOXPerpetual motion, that's my toddler!Tue Mar 18 1997 11:107
hmmm, sounds like you may have cross posted this, no?
We don't address SLS or general DIGITAL questions here.
You could go ask the MRU people if they ever think
they'll do something like that (see COOKIE::MRU).

You can't do this with NetWorker and Digital UNIX/NT.
501.2DECWET::ONOSoftware doesn't break-it comes brokenTue Mar 18 1997 11:3414
NetWorker does not support sharing a jukebox between systems. A
NetWorker server assumes it has complete control and knowledge of
the state of a jukebox and its contents. 

Even if you could have the Digital UNIX machine execute jukebox 
commands on behalf of the HP system, each system would know about 
only its own backup tapes.  NetWorker would then get extremely
confused about what is in the jukebox and you would be in grave
danger of overwriting backup tapes. 

We understand the desire to do this, but the capability is not 
available.

Wes
501.3NABETH::alanDr. File System's Home for Wayward Inodes.Tue Mar 18 1997 11:417
	There is one very hard problem that crops up when attaching
	TL family libraries to multiple hosts.  Since NSR doesn't
	support the configuration, I won't bother going into detail
	here, but if you ask in the COOKIE::MRU conference, I'll
	go on (and on and on probably) at length.  There are also
	a couple of medium problems or show-stoppers depending on
	how you look at it.
501.4DECWET::FARLEEInsufficient Virtual um...er....Tue Mar 18 1997 13:089
Also, to clarify:
The Digital UNIX operating system does not support any tape devices
being on a shared SCSI bus.  

It is not specific to NetWorker.

And we are actively working on it with the OS folks.

Kevin