Understanding vSAN memory consumption in ESXi 7.x

Products

• VMware vSAN

Issue/Introduction

This article provides information about memory consumption in the latest versions of vSAN and provides example scenarios.

Environment

VMware vSphere ESXi (All Versions)

Resolution

Select a vSAN-enabled cluster, then on the right, select the Monitor tab and then under vSAN -> Support > Performance for Support > Memory > vSAN Memory > Memory





Prospective vSAN customers may use the sizing tool to estimate memory consumption - see vsansizer.vmware.com/ for details.

• The vsansizer shows memory consumption per node after entering a workload
• To show vSAN memory overhead, use the reverse sizer feature per below:

1. Login to vsansizer.vmware.com/
2. Go to vSAN quick sizer (https://vsansizer.esp.vmware.com/reversesizer)
3. Enter the required number of disk groups & capacity disks, select deduplication & compression setting as appropriate

Once details have been entered, memory utilization information is available:

Additional Information