Subj : Re: UBCD4WIN Issue
To   : DUSTIN COOK
From : JEFF GUERDAT
Date : Thu Sep 29 2005 07:52 am

On 09-28-05, DUSTIN COOK said to ROBERT FOWLER:

RF>  One last piece of information regarding PE Builder and UBCD4WIN.
RF>  It will fail during the .iso file generation if the Windows source
RF>  files are accessed from the network at 100Mbps (buffer underruns,
RF>  I suspect).  Firewire/USB 2.0 speed is adequate.  That should
RF>  rule out any network creation except gigabit ethernet.

DC>I really have not seen this issue. We build them across the LAN at work
DC>often. What specifically is your network hardware?

Writer speed and "burn proof" capabilities are involved.  100Mb Ethernet
probably can only support 5-7MB/sec. transfer (depending on the protocol in
use - network drive protocols tend to be "chatty" although NFS v3 can help
compared to MS' CIFS and earlier versions of NFS) while a drive writing at 48x
is writing at 7.2MB/sec.  I know that my use of UBCD writing indicated that
the software was indeed using "burn-proof" settings but didn't have a way to
verify it since the process was all local.  Just 'cause it sez it's using
something doesn't mean it works on your hardware (wrong command set, etc.).
Of course, read speed is also involved - hard drives are not all that fast
compared to memory and fragmentation, retries, etc. can slow things down a
lot.


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