Skip to main content

NetApp_Insight_2020.png 

NetApp Knowledgebase

NetApp Virtual Storage Console, VASA Provider and Storage Replication Adapter for VMware vSphere: Scaling for larger environments

Views:
312
Visibility:
Public
Votes:
0
Category:
virtual-storage-console-for-vmware-vsphere
Specialty:
virt
Last Updated:

Applies to

  • Storage Replication Adapter 4.0
  • NetApp Virtual Storage Console, VASA Provider and Storage Replication Adapter for VMware vSphere Appliance 7.x
  • NetApp Virtual Storage Console, VASA Provider and Storage Replication Adapter for VMware vSphere Appliance 9.6

Issue

By default, deploying the Storage Replication Adapter 4.0 appliance or the NetApp Virtual Storage Console, VASA Provider and Storage Replication Adapter for VMware vSphere appliance "out of box" is sufficient for most small to medium size environments.  However, it may be necessary to scale the appliance if the following signs of resource contention are seen:

  • There is evidence of high CPU and / or memory utilization. For example, the following screenshot shows the output of 'top' which was run from the appliance's diagnostic shell.  This shows very high CPU utilization for the vpserver daemon (i.e. the service for VASA Provider and SRA):


1073494_Issue1.png

  •  A review of the appliance's vvolvp.log or netapp.log shows evidence of numerous long running ZAPI calls. For example, the following "slow-zapi" calls take anywhere from 10 to 25 seconds to complete:

11/06/17 EST 11:47:09 [periodic-rediscover-flexvol] slow-zapi-653741 192.168.0.33: 25629 ms
11/06/17 EST 11:47:47 [periodic-rediscover-flexvol] slow-zapi-653755 192.168.0.33: 10469 ms
11/06/17 EST 11:48:02 [periodic-rediscover-flexvol] slow-zapi-653756 192.168.0.33: 14898 ms
11/06/17 EST 11:48:22 [periodic-rediscover-flexvol] slow-zapi-653762 192.168.0.33: 10011 ms

Note: To view the vvolvp.log, you can download an appliance log bundle. For instructions on collecting a SRA Appliance log bundle, see KB: Storage Replication Adapter: How to collect logs from a SRA appliance

  • There is evidence that discovery operations take a significant amount of time to complete. This can be established by reviewing the "periodicslow" files located in /logs/rightnows directory of an appliance log bundle. Seeing a value of 30 minutes or more consistently in the "In Flight Duration" column for discovery tasks may indicate that discovery is impacting performance on the appliance:

1073494_Issue2.png

 

CUSTOMER EXCLUSIVE CONTENT

Registered NetApp customers get unlimited access to our dynamic Knowledge Base.

New authoritative content is published and updated each day by our team of experts.

Current Customer or Partner?

Sign In for unlimited access

New to NetApp?

Learn more about our award-winning Support