System information

Multipathing Checklist A
Storage arrays have different multipathing setup requirements.
Table A-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:
n
Host Mode 1: Standard.
n
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 All Initiator records must have:
n
Failover Mode = 1
n
Initiator Type = “Clariion Open”
n
Array CommPath = “Enabled” or 1
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.
HP XP
n
On XP128/1024/10000/12000, set the host mode to Windows (0x0C).
n
On XP24000/20000, set the host mode to 0x01.
NetApp No specific requirements
ESX/ESXi Configuration Set the following Software Advanced Settings for the ESX/ESXi host:
n
Set Disk.UseLunReset to 1
n
Set Disk.UseDeviceReset to 0
A PSP of Most Recently Used must be used for all LUNs hosting clustered disks for active-
passive arrays. A PSP of Most Recently Used or Fixed may be used for LUNs on active-
active arrays.
All FC HBAs must be of the same model.
VMware, Inc. 77