RE: UDFS File System on iSeries for IFS Storage

A UDFS supports user ASPs, the IFS does not.  This is why we are now
starting to use UDFS for our image storage.  I recently tried saving
/dev/QASP03/ESS800.UDFS using a BRMS backup list and it saved as individual
objects (and took the same amount of time as the same of /ESSDIR, where the
UDFS is mounted.)  I'm not sure why yet as I was expecting it to be saved as
one object.  When I find out the answer I will let you know.  We are
currently at about 325,000 objects, but expect to end up with 10-12 million
by the time we're through.

Regards,

Scott Ingvaldson
iSeries System Administrator
GuideOne Insurance Group

-----Original Message-----
date: Fri, 30 Apr 2004 09:39:21 -0500
from: richard@xxxxxxxxxxx
subject: Re: UDFS File System on iSeries for IFS Storage

Hello All,

I have a question on the UDFS (User Defined File System) for the AS/400 
and iSeries.

Why would I want to use a UDFS as opposed to putting PC files directly 
into IFS directories ?

Does it speed up file backup by putting PC files into a simulated disk ASP 
and then treating the UDFS object as a single object just like the 
Integrated PC Server (FSIOP/IPCS/IXS or whatever it's called today) would. 
It's a nice concept, but I need some confirmation on what the advantages 
are. 

The iSeries documentation on the UDFS and where it's best used are very 
sketchy.

>From my initial testing it seems more cumbersome because you have to 
create the UDFS and make sure it's mounted before use. 

Any input would be appreciated.

Regards,
Richard Schoen
RJS Software Systems Inc.
"The AS/400 and iSeries Report and Data Delivery Experts"
Email: richard@xxxxxxxxxxxxxxx
Web Site: http://www.rjssoftware.com
   
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