This topic provides a checklist of special setup requirements for different storage arrays and ESXi hosts.

Table 1. Multipathing Setup Requirements
Component Comments
All storage arrays Write cache must be disabled if not battery backed.
Topology No single failure should cause both HBA and SP failover, especially with active-passive storage arrays.
IBM TotalStorage DS 4000 (formerly FastT) Host type must be LNXCL or VMware in later versions.

AVT (Auto Volume Transfer) is disabled in this host mode.

HDS 99xx and 95xxV family HDS 9500V family (Thunder) requires two host modes:
  • Host Mode 1: Standard.
  • Host Mode 2: Sun Cluster

HDS 99xx family (Lightning) and HDS Tabma (USP) require host mode set to Netware.

EMC Symmetrix Enable the SPC2 and SC3 settings. Contact EMC for the latest settings.
EMC Clariion Set the EMC Clariion failover mode to 1 or 4. Contact EMC for details.
HP MSA Host type must be Linux.

Set the connection type for each HBA port to Linux.

HP EVA For EVA4000/6000/8000 firmware 5.031 and above, set the host type to VMware.

Otherwise, set the host mode type to Custom. The value is: 000000202200083E.

  • On XP128/1024/10000/12000, set the host mode to Windows (0x0C).
  • On XP24000/20000, set the host mode to 0x01.
NetApp No specific requirements
ESXi Configuration
  • For all LUNs hosting clustered disks on active-passive arrays, use the Most Recently Used PSP.
  • For LUNs on active-active arrays, you can use the Most Recently Used or Fixed PSP.
  • With either active-passive or active-active arrays, you can use the Round Robin PSP.
  • All FC HBAs must be of the same model.
  • Set the following Software Advanced Settings for the host: Disk.UseLunReset to 1.