[mrtg] Re: rrd file size to store 5-min data for 1 yr

[Degore, L R, SOLCM]

That would be true if you are always using the default data retention
parameters for RRD in MRTG. If you change the parameters the files sizes
will change. 

Rich DeGore
rdegore at att.com
407-805-6472


-----Original Message-----
From: Sander Foppen [mailto:zjwoelle at hotmail.com]
Sent: Friday, May 09, 2003 7:40 AM
To: 'Francis Borman'; mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: rrd file size to store 5-min data for 1 yr


You must be doing something wrong. A RRD should never grow bigger then
93K.
It's 93 when you start and it should stay 93K during time.

-----Original Message-----
From: mrtg-bounce at list.ee.ethz.ch [mailto:mrtg-bounce at list.ee.ethz.ch]
On Behalf Of Francis Borman
Sent: vrijdag 9 mei 2003 12:55
To: mrtg at list.ee.ethz.ch
Subject: [mrtg] rrd file size to store 5-min data for 1 yr

Hi guys,

Anyone has an experience to store 5-min data of 1000 router interfaces
for 1
yr in rrd?

I knwo that we can tune up the RRD, so that we can store as much data as
we
like. However, the rrd size for just storing 5-min data for two days is
about 170kb!!! It seems that to store 1 yr 5-min data, the file size
must be
31 MB!!

Let say, if I have one rrd per router interface, and if I got 1000
interfaces to monitor, I must prepare 31GB for just data storage?!!!!!

It seems a huge capacity for a PC/Server!!!! It also takes a very long
time
to retrieve data for one particular date!!!!! (That's why we need to
store
5-min data for a yr)

We are now doing sth that archive all rrd every midnite and write a
script
for data retrieval. When we comes up a situation that need to reference
the
past data, we use that script to retrieve the archived rrd of that date.
It
seems to work for somehow, but what if I need to retrieved data for a
particular week??? It seems that we need another way to handle it......

Any suggests? ^_^ Thanks

Francis

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