[mrtg] Re: TB Disk Utilization

Tue Feb 10 10:17:26 MET 2004

David,

Diskspace is just like temperature a value. It makes no sense to
calculate the rate per second.
By default MRTG caculates the rate of a counter by substracting the old
value from the current value and dividing the result by the number of
seconds between both readings. 

To avoid this you have to add 'Gauge' to the options line.

Hth,

Jan.

-----Original Message-----
From: David Nelson [mailto:dave at itsdave.tv] 
Sent: Monday, February 09, 2004 10:09 PM
To: mrtg at list.ee.ethz.ch
Subject: [mrtg] TB Disk Utilization

Got what will hopefully be an easy one.  I am trying to monitor a
NetWare 5.1 server that has 1.72TB of disk.  The config is below:

Target[SERVER_DISK]:
1.3.6.1.4.1.232.11.2.4.1.1.4.0&1.3.6.1.4.1.232.11.2.4.1.1.3.0:SNMPSTRING
@IPADDRESS * 1048576

MaxBytes[SERVER_DISK]: 1897373958144

Options[SERVER_DISK]: nopercent, dorelpercent

Legend1[SERVER_DISK]: Used Disk Space

Legend2[SERVER_DISK]: Total Disk Space

YLegend[SERVER_DISK]: Bytes

LegendI[SERVER_DISK]: Used Disk:

LegendO[SERVER_DISK]: Total Disk:

ShortLegend[SERVER_DISK]: B

Title[SERVER_DISK]: Disk Analysis for SERVER -- NetWare 5.1 Server

PageTop[SERVER_DISK]: <H1>Disk Analysis for SERVER -- NetWare 5.1
Server</H1>

 <TABLE>

   <TR><TD>System:</TD>     <TD>SERVER</TD></TR>

   <TR><TD>Maintainer:</TD> <TD> </TD></TR>

   <TR><TD>Description:</TD><TD> </TD></TR>

   <TR><TD>ifType:</TD>     <TD>N/A</TD></TR>

   <TR><TD>ifName:</TD>     <TD>N/A</TD></TR>

   <TR><TD>Port Name:</TD>  <TD>N/A</TD></TR>

   <TR><TD>Max Speed:</TD>  <TD>N/A</TD></TR>

 </TABLE>

When I use this configuration, I get no data on the generated webpage.
When I look at the log for this Target, I get this:

1076360508 1855866273792 1897373106176

1076360508 0 0 0 0

1076360209 0 0 0 0

1076360100 0 0 0 0

1076359800 0 0 0 0

1076359500 0 0 0 0

1076359200 0 0 0 0

1076358900 0 0 0 0

1076358600 0 0 0 0

<snip - you get the idea>

I have tried using Factor, which works great for the numerical analysis
below the graph, but the graph is still wrong.  The OID I'm monitoring
presents data is Kbytes rather than bytes (1700 M Kbytes  just doesn't
look right).  :)

Any ideas??

Thanks!

-- Dave

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