Garrett Burke Garrett.Burke@msc.ie wrote:

I currently use ARCServe 6.5 for backing up a F230,256MB RAM, 4MB NVRAM on 100BaseT full duplex, Extreme S48 switch, running OnTap 5.2.1 Issues that have bitten us in the past are:

a) It's slow. Backing up 24GB from the F230 using ARCServe 6.5 build 622

on

a DELL PowerEdge 1300 PIII 450 with 256MB Ram and 15 slot Compaq DLT70 library (which is actually has a HP C5173-7000) I got 92.43 MB/min last night which is about average. Note that we have lots of small files

(source

code) The 24GB is made up of 315,913 files and 29,525 directories on a single volume so you may see better performance or worse depending on your mix.

[..]

c) oplocks. This has caused us numerous problems. We now run the backups with oplocks turned off, as there some sort of interaction between ARCServe and the oplock code (we tried a few D releases but never got around it) which means that things run very, very slowly. Like, 2 days to run the backup!

Hi Garrett,

There is an oplock bug in 5.2.1 (burt12483) that sometimes delays the delivery of oplock break messages -- I bet that's the performance problem you're hitting with oplocks enabled. The fix for this bug is available in 5.2.2P1 and 5.3. Have you tried either of those releases?

Matt