I'll ask my engineer also.   It may be dependent on what type of HBAs your
using and how they are

zoned.    What library firmware are you using?   I must not have this
enabled because all my drives 

have a port WWN and a node WWN..both of which are similar; both are from the
FC drive itself

and change with the drive.

 

You could check the WWN cache of your switch to see what number it is
seeing.   It would be really 

neat to override the tape drive's WWN and have the library present the same
ones all the time. 

 

 

 

Robert Maiello

Pioneer Data Systems

 

  _____  

From: kraghava AT comcast DOT net [mailto:kraghava AT comcast DOT net] 
Sent: Thursday, September 29, 2005 10:36 AM
To: Maiello, Robert; NETWORKER AT LISTSERV.TEMPLE DOT EDU; Raghava Karu
Subject: Re: Dynamic WWNs for FC tape drives

 

Yes, we were told by Storagetek Engineers on L700e it is possible, if
library IPL'd. What IPL mean ? When dWWN was enabled on library, we are
seeing two wwns for each drive in library front panel. But don't know which
wwn will be recognised by SAN switch?

 

Thanks

Rag

 

-------------- Original message -------------- 

> Is this possible on the L700? Our drives go right to the switch. Can 
> the library override/rewrite the WWN of a drive? 
> 
> Robert Maiello 
> Pioneer Data Systems 
> 
> On Fri, 23 Sep 2005 15:58:18 +0000, Raghava Karu wrote: 
> 
> >Hi, 
> >We want to enable the dynamic WWN feature on L700 and for LTO II FC
drives. 
> How do I enable it on L700 and what are the configurations needs to be
made 
> on backup server, storagenodes. 
> > 
> >Each drive should be shared by backup server, and 4 storagenodes in SAN 
> environment. Please also share me if you are noticing any issues with dWWN

> feature. 
> > 
> >Thanks in advance, 
> >Raghava 
> > 
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