vSphere Storage - ESXi 5.1 - Documentation - VMware
vSphere Storage - ESXi 5.1 - Documentation - VMware
vSphere Storage - ESXi 5.1 - Documentation - VMware
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<strong>vSphere</strong> <strong>Storage</strong><br />
n Ensure that the Fibre Channel HBAs are installed in the correct slots in the host, based on slot and bus<br />
speed. Balance PCI bus load among the available busses in the server.<br />
n Become familiar with the various monitor points in your storage network, at all visibility points, including<br />
host's performance charts, FC switch statistics, and storage performance statistics.<br />
n Be cautious when changing IDs of the LUNs that have VMFS datastores being used by your <strong>ESXi</strong> host. If<br />
you change the ID, the datastore becomes inactive and its virtual machines fail. You can resignature the<br />
datastore to make it active again. See “Managing Duplicate VMFS Datastores,” on page 162.<br />
If there are no running virtual machines on the VMFS datastore, after you change the ID of the LUN, you<br />
must use rescan to reset the ID on your host. For information on using rescan, see “<strong>Storage</strong> Refresh and<br />
Rescan Operations,” on page 135.<br />
Disable Automatic Host Registration<br />
When you use EMC CLARiiON or Invista arrays for storage, it is required that the hosts register with the<br />
arrays. <strong>ESXi</strong> performs automatic host registration by sending the host's name and IP address to the array. If<br />
you prefer to perform manual registration using storage management software, disable the <strong>ESXi</strong> autoregistration<br />
feature.<br />
Procedure<br />
1 In the <strong>vSphere</strong> Client, select the host in the inventory panel.<br />
2 Click the Configuration tab and click Advanced Settings under Software.<br />
3 Click Disk in the left panel and scroll down to Disk.EnableNaviReg on the right.<br />
4 Change the default value to 0.<br />
This disables the automatic host registration enabled by default.<br />
Disable Automatic Host Registration in the <strong>vSphere</strong> Web Client<br />
When you use EMC CLARiiON or Invista arrays for storage, it is required that the hosts register with the<br />
arrays. <strong>ESXi</strong> performs automatic host registration by sending the host's name and IP address to the array. If<br />
you prefer to perform manual registration using storage management software, disable the <strong>ESXi</strong> autoregistration<br />
feature.<br />
Procedure<br />
1 Browse to the host in the <strong>vSphere</strong> Web Client navigator.<br />
2 Click the Manage tab, and click Settings.<br />
3 Under System, click Advanced System Settings.<br />
4 Under Advanced System Settings, select the Disk.EnableNaviReg parameter and click the Edit icon.<br />
5 Change the value to 0.<br />
This disables the automatic host registration enabled by default.<br />
Optimizing Fibre Channel SAN <strong>Storage</strong> Performance<br />
Several factors contribute to optimizing a typical SAN environment.<br />
If the environment is properly configured, the SAN fabric components (particularly the SAN switches) are<br />
only minor contributors because of their low latencies relative to servers and storage arrays. Make sure that<br />
the paths through the switch fabric are not saturated, that is, that the switch fabric is running at the highest<br />
throughput.<br />
68 <strong>VMware</strong>, Inc.