vsphere-esxi-vcenter-server-55-storage-guide

vSphere StorageEnable Jumbo Frames for Software and Dependent Hardware iSCSITo enable Jumbo Frames for software and dependent hardware iSCSI adapters in the vSphere Web Client,change the default value of the maximum transmission units (MTU) parameter.You change the MTU parameter on the vSphere switch that you use for iSCSI traffic. For more information,see the vSphere Networking documentation.Procedure1 Browse to the host in the vSphere Web Client navigator.2 Click the Manage tab, and click Networking.3 Click Virtual Switches, and select the vSphere switch that you want to modify from the list.4 Click the Edit Settings icon.5 On the Properties page, change the MTU parameter.This step sets the MTU for all physical NICs on that standard switch. The MTU value should be set tothe largest MTU size among all NICs connected to the standard switch. ESXi supports the MTU size upto 9000 Bytes.Enable Jumbo Frames for Independent Hardware iSCSITo enable Jumbo Frames for independent hardware iSCSI adapters in the vSphere Web Client, change thedefault value of the maximum transmission units (MTU) parameter.Use the Advanced Options settings to change the MTU parameter for the iSCSI HBA.Procedure1 Browse to the host in the vSphere Web Client navigator.2 Click the Manage tab, and click Storage.3 Click Storage Adapters, and select the independent hardware iSCSI adapter from the list of adapters.4 Under Adapter Details, click the Advanced Options tab and click Edit.5 Change the value of the MTU parameter.ESXi supports the MTU size up to 9000 Bytes.Configuring Discovery Addresses for iSCSI AdaptersSet up target discovery addresses so that the iSCSI adapter can determine which storage resource on thenetwork is available for access.The ESXi system supports these discovery methods:Dynamic DiscoveryStatic DiscoveryAlso known as SendTargets discovery. Each time the initiator contacts aspecified iSCSI server, the initiator sends the SendTargets request to theserver. The server responds by supplying a list of available targets to theinitiator. The names and IP addresses of these targets appear on the StaticDiscovery tab. If you remove a static target added by dynamic discovery, thetarget might be returned to the list the next time a rescan happens, the HBAis reset, or the host is rebooted.The initiator does not have to perform any discovery. The initiator has a listof targets it can contact and uses their IP addresses and target names tocommunicate with them.90 VMware, Inc.