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 7.x and provides example scenarios.

Environment

VMware vSAN 6.6.x
VMware vSAN 7.0.x
VMware vSAN 6.2.x
VMware vSAN 6.7.x
VMware vSAN 6.0.x

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