Your harping is well founded...I know of no one, of any real merit, that 
doesn't use SIZ. Tell your SAN admin to hook it up correctly.




Geyer, Gregory wrote:
> I believe our SAN admin has one zone which includes all the tape drives and 
> all the HBAs for the media servers. Makes it easy for him. 
> But we have performance problems. And there is one other zone I think with 
> just a couple of HBAs in it that performs very well. I've been harping on 
> zoning as a possible cause to our problems and have run across this in 
> Brocade's Zoning Best Practice guide (link provided below). 
> Are there Netbackup environments out there with one large zone containing 
> many HBAs on it that isn't having performance problems? I've been trying to 
> lobby to get that fixed, or at least tested further. 
> The meat of the pdf is:  
> The recommended grouping method for Zoning is Single Initiator Zoning (SIZ), 
> sometimes 
> called ?Single HBA Zoning.? With SIZ, each zone has only a single HBA and one 
> or more 
> storage ports. If the HBA has both disk and tape storage devices, then you 
> need to create two 
> zones: one zone with the HBA and the disk devices and a second zone with the 
> HBA and the 
> tape devices. SIZ is optimal because it prevents any host-to-host interaction 
> and limits RSCNs 
> to just the zones that need the information within the RSCN.  
> and the link:  
> http://www.boche.net/blog/wp-content/uploads/2009/Zoning_Best_Practices_WP-00.pdf
>  
> (http://www.boche.net/blog/wp-content/uploads/2009/Zoning_Best_Practices_WP-00.pdf)


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