Re: [Networker] Problems with DDS on Windows Server

The advice I've gotten is that 6.1.3 is much more stable than 6.2.  I'd
consider dropping back to 6.1.3. 

BRian

Brian Narkinsky
System Manager
Department of Environmental Protection
MS 6520
2600 Blairstone RD
Tallahassee, FL 32399
phone (850)245-8314
fax (850)412-0400
 



-----Original Message-----
From: Gerardo Gomez Ortega [mailto:gerardo2002 AT WANADOO DOT ES] 
Sent: Tuesday, April 15, 2003 3:41 AM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: Re: [Networker] Problems with DDS on Windows Server

On Mon, 14 Apr 2003 16:30:28 -0400, Gaddy <xy.0815 AT GMX DOT NET> wrote:

>Hi all,
>
>there has been a thread about DDS
>and it's "hidden" limitations (scalability).
>But some time has gone by, ...
>
>We have an installation with IBM3584, 6xLTO-1,
>and do backups approx. 1500 GB daily (max.)
>using NetWorker 6.2 on W2K.

Take care with version 6.2 (I will use 6.1.3, if posible)

>So we've decided to use SANnodes (all W2K) for
>- applications, because they do daily fulls
>  (notes, oracle, ...)
>- some bigger file servers, because restore
>  time has to be as short as possible
>
>At the momenent we have 6 DRIVES and 42 DEVICES,
>which means:
>6 SANnodes share all the 6 drives
>2 SANnodes share only 3 each (they only have 1 HBA)

Don't forget to reduce the "Idle Device Timeout" in jukebox window.

>With this configuration we see MASSIVE RPC problems
>nsrmmd timeouts, nsrmon exits and all the like.
>(not to mention the silly "jbconfig" sessions)

You can use "jbconfig < file_cfg", where file_cfg is a file containig the
jbconfig dialog, so if you need to reconfigure the jukebox you can do it
easier.

>So my questions are:
>Has someone good/bad experience with tuning the
>nsrmmd settings?
>nsrmmd polling interval = 3
>nsrmmd restart interval = 2
>nsrmmd control interval = 5
>What will happen if I increase polling+control interval?

Use persisten binding. W2K could change, and it does, the names of device
tapes (\\.\TapeX), that confuse backup software.

Regards,
Gerardo.

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