We use amanda in the Centre. We backup up aprox. 25 Gb per day in a L9 Sun
Storedge connected to a Sun Server.-
Kind Regards.
_____
Pablo Jejcic
Smartweb Senior system Administrator
School of Computing - Robert Gordon University
pablo.jejcic AT smartweb.rgu.ac DOT uk
T:44-(0)1224-262797
F:44-(0)1224-262790
_____
``The nice thing about standards is that there are so many to choose from.
And if you really don't like all the standards you just have to wait another
year until the one arises you are looking for.''
A. Tanenbaum, ``Introduction to Computer Networks'
_____
-----Original Message-----
From: owner-amanda-users AT amanda DOT org [mailto:owner-amanda-users AT amanda
DOT org]
On Behalf Of Paul Bijnens
Sent: 12 March 2003 17:46
To: gene_heskett AT iolinc DOT net
Cc: Dr. David Kirkby; Amanda Users
Subject: Re: Who uses amanda?
Gene Heskett wrote:
>
> But since amanda is a client/server setup, and the client can be
> told to do the compression, the next consideration would be the
> occupied network bandwidth while the backup is running. Using
> client compression can make night and day differences in the
> network loading and its general useability while the backup is in
> progress. You'll need at least 100baseT if its going to get well
> into the 10's of gigabytes per session.
The gain with the parallelisation of Amanda can be amazing! Here is a
snippet of my archive run last weekend:
STATISTICS:
Total Full Daily
-------- -------- --------
Estimate Time (hrs:min) 0:13
Run Time (hrs:min) 8:12
Dump Time (hrs:min) 42:57 42:57 0:00
Output Size (meg) 70427.9 70427.9 0.0
Original Size (meg) 149337.0 149337.0 0.0
Avg Compressed Size (%) 47.2 47.2 --
Filesystems Dumped 114 114 0
Avg Dump Rate (k/s) 466.3 466.3 --
It means that it did a full backup in 8 hours 12 minutes,
that would take almost 43 hours when run sequentially (what many simple
backup scripts actually do!). We have a mix of fast and old slow machines
(Sun Sparc IPX, Intel Pentium 150Mhz with 32 MByte RAM etc); also a mix of
100baseT and 10baseT network cards. Amanda does them all (do there still
exist veritas clients for SunOS 4.1.4?).
For curiosity, here is my Daily config statistics section:
STATISTICS:
Total Full Daily
-------- -------- --------
Estimate Time (hrs:min) 0:28
Run Time (hrs:min) 2:52
Dump Time (hrs:min) 11:40 8:45 2:55
Output Size (meg) 16658.4 15116.6 1541.8
Original Size (meg) 42697.5 37183.0 5514.5
Avg Compressed Size (%) 39.0 40.7 28.0
Filesystems Dumped 116 22 94 (1:89 2:5)
Avg Dump Rate (k/s) 406.4 491.5 150.7
--
Paul Bijnens, Xplanation Tel +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM Fax +32 16 397.512
http://www.xplanation.com/ email: Paul.Bijnens AT xplanation DOT com
***********************************************************************
* I think I've got the hang of it now: exit, ^D, ^C, ^\, ^Z, ^Q, F6, *
* quit, ZZ, :q, :q!, M-Z, ^X^C, logoff, logout, close, bye, /bye, *
* stop, end, F3, ~., ^]c, +++ ATH, disconnect, halt, abort, hangup, *
* PF4, F20, ^X^X, :D::D, KJOB, F14-f-e, F8-e, kill -1 $$, shutdown, *
* kill -9 1, Alt-F4, Ctrl-Alt-Del, AltGr-NumLock, Stop-A, ... *
* ... "Are you sure?" ... YES ... Phew ... I'm out *
***********************************************************************
|
