Iperf & Data Domain

Having a good IP connection to your data domain is vital for good operation. Once excellent tool to either relax or concern you, is the Ipef tool. This is a small guide on how to use this great tool.

Prerequisite:
Backup server must have iperf installed. For Red Hat Linux you can install the package with:
yum install iperf.x86_64

Logon on to DDOS by ssh and run the following command:
# net iperf server run

On the backup server run:
# iperf -c {DNS name of Data Domain} -t 10 -i 2

-t indicates to run iperf for 10 seconds
-i 2 will cause iperf to report in 2 sec intervals.

This will output something like:
------------------------------------------------------------
Client connecting to dd01.acme.com, TCP port 5001
TCP window size: 512 KByte (default)
------------------------------------------------------------
[ 3] local 10.1.1.1 port 10066 connected with 10.1.1.2 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 2.0 sec 1.20 GBytes 5.14 Gbits/sec
[ 3] 2.0- 4.0 sec 1.18 GBytes 5.05 Gbits/sec
[ 3] 4.0- 6.0 sec 1.17 GBytes 5.04 Gbits/sec
[ 3] 6.0- 8.0 sec 1.18 GBytes 5.07 Gbits/sec
[ 3] 8.0-10.0 sec 1.18 GBytes 5.06 Gbits/sec
[ 3] 0.0-10.0 sec 5.90 GBytes 5.07 Gbits/sec

This show there is 5Gbit of available network bandwidth, and its safe to conclude no network issues exist between backup server and Data Domain appliance

Update: the iperf client and server is not compatible with version 3 of Iperf

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