🚀 go-pugleaf

To all,

Recently I've upgraded my backup equipment and I'm getting the same if
not slower backup performance.  My impression is that the upgrade as
listed below should improve backup speed, even though I've changed a few
variables.  Here's my old and new configuration:


			OLD						NEW

Backup server:	Compaq Prosignia VS (486/66)			Compaq Prosignia VS
(486/66)
		running NetWare 4.1				running NetWare 4.1
SCSI card:	Compaq Integrated 32-bit Fast-2 (53C710)	Compaq Integrated
32-bit Fast-2 (53C710)
Server Disk:	Compaq DSP3053LS SCSI Fast-2 (490MB)		Compaq DSP3053LS SCSI
Fast-2 (490MB)
Server memory:	48 MB						72 MB
Backup drive:	ADIC DAT (4mm) autochanger			Compaq 15/30 GB DLT drive
Backup software:Cheyenne ARCserve v5.01g			Cheyenne ARCserve v6.0
Server network
connection:	FDDI						FDDI
Backup speed:	Approx. 15-20 MB/min.				Approx. 8-12 MB/min.
								(Approx. 12-14 MB/min. with Push Agent)


I had to upgrade the DAT drives as I was consistently getting many write
error no matter how much head cleaning I did or how many new tapes I
bought and tried.

I've increased the Maximum Service Processes, Minimum/Maximum Directory
Cache Buffers, and Minimum/Maximum Packet Receive Buffers on my backup
server as Cheyenne tech. support on their WWW server dictates.  I've
installed all Compaq, Cheyenne, and Novell patches so that the backup
server is up-to-date.  The servers I'm backing up are Compaq ProLiant
2000s with plenty of memory and approx. 120 users connected (drops down
to maybe half that at night.)

I have tried Cheyenne's suggestion of running a Copy job or disabling
tape writes to see if the SCSI channel is overloaded.  (It doesn't
appear to be from this test.)  Since I do see 100% utilization
frequently during backups, I tried ARCserve v6.0 on a Pentium server
(133 Mhz) yesterday and got better backup speed (14-17 MB/min.) and less
utilization (average 45%).

Can anyone make any suggestions?  I thought ARCserve 6.0 and DLT drives
would give me better backup performance.  What are your thoughts?

Please reply to pzocco@wesleyan.edu.   Many thanks!


Paul Zocco
Microcomputing Specialist
Information Technology Services
Wesleyan University
265 Church St.
Middletown, CT   06459

pzocco@wesleyan.edu