BirtyB
7 years agoLevel 4
Slow vm restores
Running NBU 8.1 on Server 2016, restoring a vm from MSDP direct to Compellent SC4020 SAN we are underwhelmed with the performance. We see KB/Sec 18713. We get similar performance when using LAN trans...
if a network issue is in suspicion I highly recommend iperf.
I have multiple times used iperf to find "somthing not right" with the network.
iperf has a reciver and sender mode - ip traffic is then generated and a bandwith is reported. If that bandwith is consistent low - forget about netbackup sending a higer volume of traffic.
A example : run test for 60 seconds and report bandith every 2. seconds.
# iperf -c duplo08 -p 5002 -t 60 -i 2
------------------------------------------------------------
Client connecting to acme.com, TCP port 5002
TCP window size: 512 KByte (default)
------------------------------------------------------------
[ 3] local x.x.x.x port 23471 connected with x.x.x.x port 5002
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 2.0 sec 1.32 GBytes 5.68 Gbits/sec
[ 3] 2.0- 4.0 sec 1.32 GBytes 5.67 Gbits/sec
[ 3] 4.0- 6.0 sec 1.32 GBytes 5.68 Gbits/sec
[ 3] 6.0- 8.0 sec 1.32 GBytes 5.67 Gbits/sec
(shortned)