Veritas Volume Replicator

Hi all,

Just want to ask if there's a Bandwidth Calculator for Veritas Info Scale?

Thank you and Best regards!

4 Replies

Re: Veritas Volume Replicator

If you ask vvr data replication bandwidth,  you can run


#vxrlink -g <dg_name> -i 2 status <rlink_name>

you can work out easily the data rep bandwidth between 2 seconds time interval.

if I miss understood your question, please reply with more details of what is exactly the bandwidth info you after.



Re: Veritas Volume Replicator

Good morning Sir!

Is there any available Bandwidth calculator? I just want to calculate the bandwidth for data transfer from One cluster to another.

Also would like to know the things needed or the requirements to calculate the bandwidth.

Thank you and best regards!



Re: Veritas Volume Replicator

please read these technotes to see if they help

https://www.veritas.com/support/en_US/article.100022423  -  "Using IPerf to measure available network bandwidth when troubleshooting VVR (Veritas Volume Replicator) performance issues"

https://www.veritas.com/support/en_US/article.100020987 - "Installing and running the FirstLook utility to gather performance data"

https://sort.symantec.com/public/documents/sf/5.1/aix/html/vvr_admin/ch03s05.htm - "Controlling the network bandwidth used for replication Understanding replication settings for a Secondary"

the actual VVR  replication data rate is affected by many tactors and some of them  are listed below

network performance

server avaialble resources

server load

storage sub-system performance


VxVM/VxFS configuration

VVR setup/ tunings

HBA/SAN/fibre etc tunings

VVR performance tuning is a very challenging task, if need further assistance, open a support case with Veritas support

make sure you gave the following data ready when open a support case


2. FirstLook reports (from both side of the servers)


Re: Veritas Volume Replicator

We package a stand-alone application call VR Advisor with the InfoScale (and legacy SF) bits. Details are in the guides. One can point it at a workload, gather data for a few days, then perform analytics to see what bandwidth is required for that specific workload. No need to install InfoScale. Supports all native file systems/volume managers in addition to VxVM.
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