Networker

[Networker] Window 2008 memory and logs

2009-03-18 17:33:18
Subject: [Networker] Window 2008 memory and logs
From: aka004db <networker-forum AT BACKUPCENTRAL DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Wed, 18 Mar 2009 17:25:53 -0400
[quote="Fazil Saiyed"]Hello,
Please review storage node  or snapimage ( if still available) option for 
this client.

How I can enable local logging on the EMC networker client.
If you run the client by script, then -v ( each extra v will 
increase the logging level) with the save       cmd will do it ( logs will 
go to savegrp log)or you can do verbose logging for the group. ( I would 
be      very careful with either option, as the log file fills up, it 
could adversely impact your backup &            server performance, you 
will get failure messages without extra logging ( i.e open files etc)

aka004db: So in the end the logs will allways completely remain on the backup 
server, and not a copy on the client as well? In my eventlog no entries are 
written as well..

- Is it possible not to dump the full filesystem for each drive prior to 
backing up data?
You will need to look into Native OS capabilities, i.e VSS, also 
look into change journal to make use of         it's capabilities

aka004db: As far as I can tell from the documentation it is even impossible not 
to use VSS. The change journal is a part of VSS, so that is used and enabled. I 
simply cannot figure out the reason why every save.exe process needs to build a 
complete directory listing...

- Is it necessary to put a hughe amount of physical memory in the server 
for backup purposes only?
I don't think so, however, expect backups to run very long time, 
unless you breakup the data in various  saveset and configure Legato 
backups to be spread out. ( How much data and files are you referring too 
?)

aka004db: I actually tried splitting up into different savesets, but that only 
made things worse as more save.exe processes start to build up a directory 
listing in memory. Note this is not only for the designated logical disk to be 
backed up, but also on volumes not a member of the save set :-(
The data is about 2,5 TB written data full of homedirectories, 
profiledirectories etc. etc. so, flat file data is millions and millions of 
folders...

If you cannot get SN capabilities , try and serrate file system if 
possible to different logical disk & spread out your backups, this way you 
may gain slight advantage on read access & add  a robust raid controller , 
optimized for read. ( This are optional steps and will only go so far)
Does your backup go to tape or VTL ? You may gain slightly better 
performance if you use disk or VTL backups vs Tape ( again few other may 
disagree)
HTH

aka004db: backup is to VTL, but the data transfer does not even occur so the 
bottleneck is not on the server. I did another test today and one actually 
finished: save.exe pushed 10 GB of data for a VSS:SYSTEM into the server, but 
it took the process more than 5 GB in memory...  :-( and several hours. The 
actual data transfer was finished in a blink of an eye!

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