Have you tried any native backups to compare speed?  I use the same drives
on a Solaris system and get slower than expected results but still 8-18gb/s.
My drives are HVDS and so are a bit slower than LVDS.  Early on I had to
make changes to a config file (st.conf) to help performance with Legato
while TAR backed up at a normal rate without the changes.

Are there any hotfixes related to your hardware?  Can you tell what the sync
rate is on your 39160?  I had to step down a 29160 to help with a DLT8000 on
a W2K box.

Using local data for testing is a great idea.  Takes any transitory network
latency out of the formula.  I have some W2K clients that give me 2-3mb/s on
a good day while most W2K hosts can generate at least 8mb/s.

I've not looked on a Windows server.  Can you play with blocks or buffers in
that environment?  Do you have any SNMP tools for the drive to check for
errors or problems?  I get some info through a controller on my Galactica
library and find that information sometimes helpful.

David

-----Original Message-----
From: Mark Davis [mailto:rikk0088 AT YAHOO DOT COM]
Sent: Wednesday, May 21, 2003 2:25 PM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: [Networker] LTO speed is slow

Can't get my HP Ultrium drive to backup any faster then 1.2MB-sec.  I've
update the firmware and drivers for the drive and SCSI controller (39160).
I'm backing up multiple streams from the local server and a couple of
clients with a Gig NIC set to GB Full duplex.  Have tried just backing up
data from the local system from two drives and a RAID system.

I even used bigasm (discribed in the NW tunning guide).

O/S is WIN2K-sp3
NetWorker 6.2.
2-1.4GHZ CPU's
2GB mem

Any idea's ????

Mark

--
Note: To sign off this list, send a "signoff networker" command via email
to listserv AT listmail.temple DOT edu or visit the list's Web site at
http://listmail.temple.edu/archives/networker.html where you can
also view and post messages to the list.
=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=

--
Note: To sign off this list, send a "signoff networker" command via email
to listserv AT listmail.temple DOT edu or visit the list's Web site at
http://listmail.temple.edu/archives/networker.html where you can
also view and post messages to the list.
=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=