Re: [Networker] Writing to LAN when SAN not available

Thanks Terry, that sounds like how we have ours set up too. I just couldn't 
work out where and if there was a value set to say when it's had enough of 
trying to write to a device on the SAN.

-----Original Message-----
From: lemons_terry AT emc DOT com [mailto:lemons_terry AT emc DOT com] 
Sent: Friday, June 20, 2003 5:00 PM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU; Mitchell, Caroline
Subject: RE: [Networker] Writing to LAN when SAN not available


Hi Caroline

The key to this is the client resource's 'Storage nodes' field.  This field 
determines which system will write the data to the output device (tape, disk, 
etc.).  If the client's own hostname is entered in this field, then the client 
is, therefore, a storage node, and write its data to whatever output devices it 
has been configured to use.  If another systems's hostname is entered, then the 
client will ALWAYS send its data via IP to that other system (which is the 
storage node in this case).

Also, the 'Storage nodes' field is an ordered list.  NetWorker will attempt to 
use the first storage node in the list; if it can't, then it will attempt to 
use the second storage node in the list, and so on.  The "can't use" is defined 
by being unable to mount an appropriate volume within the selected devices' 
"Save Mount Timeout" attribute value.

So, in our case, if you have a system that usually backups up via the SAN but 
the fallback is to back up over the LAN, you would specify, in the 'Storage 
nodes' field for that system: [that system's name] - for backing itself up over 
the SAN [other storage node] - for backup up the client over the LAN

in that order.

Hope this helps!
tl

Terry Lemons
CLARiiON Applications Integration Engineering
        EMC²            
where information lives

4400 Computer Drive, MS D239
Westboro MA 01580
Phone: 508 898 7312
Email: Lemons_Terry AT emc DOT com

-----Original Message-----
From: Mitchell, Caroline [mailto:caroline.mitchell AT HP DOT COM]
Sent: Friday, June 20, 2003 3:37 AM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: [Networker] Writing to LAN when SAN not available


Hi All,
 
We are doing some SAN backups, if for some reason the devices on the SAN aren't 
available, what criteria does Networker use to decide when to write back to the 
LAN. 
We are using Networker V6.1.3.
 
Any input is appreciated, thanks,
Caroline

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