Re: High latency during backup on the virtual machine

Hello ,

         Thanks for your update.

1. The Davg is about 60 during the backup job which is abnormal, as I found that Davg should be under 25.

    As per the screen shot i can cleary see DAVG value is high.As per Vmware recommendation it should not go above 10!!

What is the count prior to back-up activity?

2. We have the other LUN using another ISCSI storage, HP instead of Netgear in our system, and that doesn't have this problem.That's why I wonder if it is the problem of ReadyNAS ISCSI storage.

Most likey.Do you have Storage Vmotion configured?If so can you please migrate this VM and do check the latency?

3.The storage array is supported as per VMware HCL

Yes,you are correct >http://www.vmware.com/resources/compatibility/detail.php?deviceCategory=san&productid=14582&deviceCategory=san&partner=65&arrayTypes=1&isSVA=1&page=1&display_interval=10&sortColumn=Partner&sortOrder=Asc

Are you following the right path policy for the respetive esx/esxi version?

4.Sorry I'm still new to VMware. What does internal/external replication mean?

Internal replications are Clone/Snap activity within the same Storage Array

External replications are between Storage array