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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n To use boot from SAN, make sure that the active SP is chosen for the boot LUN’s target in the HBA BIOS.<br />
IMPORTANT For <strong>ESXi</strong> to support EMC CLARiiON with ALUA, check the HCLs to make sure that you use the<br />
correct firmware version on the storage array. For additional information, contact your storage vendor.<br />
EMC Symmetrix <strong>Storage</strong> Systems<br />
EMC Symmetrix storage systems work with <strong>ESXi</strong> hosts in FC SAN configurations. Generally, you use the EMC<br />
software to perform configurations.<br />
The following settings are required on the Symmetrix networked storage system. For more information, see<br />
the EMC documentation.<br />
n Common serial number (C)<br />
n Auto negotiation (EAN) enabled<br />
n Fibrepath enabled on this port (VCM)<br />
n SCSI 3 (SC3) set enabled<br />
n Unique world wide name (UWN)<br />
n SPC-2 (Decal) (SPC2) SPC-2 flag is required<br />
The <strong>ESXi</strong> host considers any LUNs from a Symmetrix storage array with a capacity of 50MB or less as<br />
management LUNs. These LUNs are also known as pseudo or gatekeeper LUNs. These LUNs appear in the<br />
EMC Symmetrix Management Interface and should not be used to hold data.<br />
IBM System <strong>Storage</strong> DS4800 <strong>Storage</strong> Systems<br />
IBM System <strong>Storage</strong> DS4800 systems used to be called IBM FAStT. A number of storage array vendors<br />
(including LSI and <strong>Storage</strong>Tek) make SAN storage arrays that are compatible with the DS4800.<br />
For your host to work with IBM DS4800 and other compatible systems, make sure to set the multipathing policy<br />
on your host to Most Recently Used.<br />
Configuring the Hardware for SAN Failover with DS4800 <strong>Storage</strong> Servers<br />
This topic provides information on how to set up a highly available SAN failover configuration with an<br />
<strong>ESXi</strong> host and DS4800 storage.<br />
You must have the following hardware components:<br />
n Two FC HBAs, such as QLogic or Emulex, on each <strong>ESXi</strong> machine.<br />
n Two FC switches connecting the HBAs to the SAN (for example, FC switch 1 and FC switch 2).<br />
n Two SPs (for example, SP1 and SP2).<br />
Each SP must have at least two ports connected to the SAN.<br />
Use the following connection settings for the <strong>ESXi</strong> host, as shown in SAN Failover:<br />
Chapter 6 Modifying Fibre Channel <strong>Storage</strong> for <strong>ESXi</strong><br />
n Connect each HBA on each <strong>ESXi</strong> machine to a separate switch. For example, connect HBA1 to FC switch<br />
1 and HBA2 to FC switch 2.<br />
<strong>VMware</strong>, Inc. 53
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