vSphere Storage - ESXi 5.1 - Documentation - VMware

Enable Jumbo Frames for Independent Hardware iSCSI
To enable Jumbo Frames for independent hardware iSCSI adapters in the vSphere Web Client, change the
default value of the maximum transmission units (MTU) parameter.
Use the Advanced Options settings to change the MTU parameter for the iSCSI HBA.
Procedure
1 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 Adapters
Set up target discovery addresses so that the iSCSI adapter can determine which storage resource on the
network is available for access.
The ESXi system supports these discovery methods:
Dynamic Discovery Also known as SendTargets discovery. Each time the initiator contacts a
specified iSCSI server, the initiator sends the SendTargets request to the server.
The server responds by supplying a list of available targets to the initiator. The
names and IP addresses of these targets appear on the Static Discovery tab. If
you remove a static target added by dynamic discovery, the target might be
returned to the list the next time a rescan happens, the HBA is reset, or the host
is rebooted.
Static Discovery The initiator does not have to perform any discovery. The initiator has a list of
targets it can contact and uses their IP addresses and target names to
communicate with them.
Set Up Dynamic Discovery in the vSphere Client
With Dynamic Discovery, each time the initiator contacts a specified iSCSI storage system, it sends the
SendTargets request to the system. The iSCSI system responds by supplying a list of available targets to the
initiator.
Required privilege: Host.Configuration.Storage Partition Configuration
When you set up Dynamic Discovery, you can only add a new iSCSI system. You cannot change the IP address,
DNS name, or port number of an existing iSCSI system. To make changes, delete the existing system and add
a new one.
Procedure
1 Log in to the vSphere Client, and select a host from the inventory panel.
2 Click the Configuration tab, and click Storage Adapters in the Hardware panel.
The list of available storage adapters appears.
3 Click the Configuration tab, and click Storage Adapters in the Hardware panel.
The list of available storage adapters appears.
Chapter 11 Configuring iSCSI Adapters and Storage
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