Setting virtual machine file system heap size values

Products

• VMware vSphere ESXi

Issue/Introduction

The virtual machine file system heap size values can be adjusted within the following limits:

Version/build	Minimum heap value	Maximum heap value
ESXi/ESX 4.x	N/A	128 MB
ESXi 5.0 Build 1024429 and later	256 MB	640 MB
ESXi 5.0 Build 914586 and earlier	N/A	256 MB
ESXi 5.1 Build 1065491 and later	256 MB	640 MB
ESXi 5.1 Build 914609 and earlier	N/A	256 MB

Environment

VMware vSphere ESXi 5.0

Resolution

Use the following procedure and set the values within suggested limits in the above table:

1. Log in to vCenter Server or the ESXi host using vSphere Client. If connecting to vCenter Server, select the ESXi host from the inventory.
2. Click the Configuration tab.
3. Click Advanced Settings.
4. Select VMFS3.
5. Update the field in VMFS3.MaxHeapSizeMB with the options as per the limits.
6. Restart the ESXi Host for the changes to take effect.