Printing large pdf files

[Jeff Borders]

Hello, I work for a major retailer who is converting from a script-based HP Jetadmin setup on Solaris using straight lpd printing.  We're switching to cups and plan to push out catalogs to each store.  I need to print a 300MB PDF file to various HP 3800/4700 printers, all with >=128MB Ram.  I can print 40MB PDFs any way I choose, raw or PS.  But the true load test is the giant 300MB PDF that will go out about once a year to over 1000 stores. ie. 1000 queues.  The other complication is we have slow links to all of the stores.  It works now with the old system.  But with cups it does not.  I'm convinced it's some kind of timeout because I'll get two banner pages and no job in between.  This is running on SLES 10.2.  I have read the Michael Sweet Cups book many times looking for an answer.

su-cupsprd01:/etc/cups # lpoptions

job-sheets=none,none raw=true HPOption_Disk=RAMDisk MediaType=Plain Resolution=600dpi PageSize=Letter PageRegion=Letter InputSlot=Auto HPOption_PaperPolicy=Crop

Here's my cupsd.conf:

su-cupsprd01:/etc/cups # cat cupsd.conf
#LogLevel info
LogLevel debug
Printcap /etc/printcap
User lp
Group lp
RunAsUser Yes
Port 631
Port 80
HostNameLookups On
Browsing On
BrowseAddress 10.255.255.255
BrowseAllow 10.
BrowseDeny All
KeepAlive On

#KeepAliveTimeout - controls how long a persistent HTTP connection remains open after the last request.

#KeepAliveTimeout 60
KeepAliveTimeout 86400

#LimitRequestBody - controls max size of print files.
LimitRequestBody 0

#Timeout - amount of time to wait before an active HTTP or IPP request times out.
#Timeout 300
Timeout 86400

<Location />
Order deny,allow
Deny from all
Allow from 127.0.0.1
Allow from 10.1.0.0/255.255.0.0
</Location>

<Location /admin>
Order Deny,Allow
Deny from All
Allow from 127.0.0.1
Allow from 10.1.0.0/255.255.0.0
</Location>
su-cupsprd01:/etc/cups #

I'd really appreciate some help.
Thank you,
Jeff Borders