Assigning LDEV ID
• When configuring Ext Stor, to create secondary VOL (S-VOL/V-VOL) using VSS provider
and GUI, assign the physical LDEV ID to RSG which P-VOL belongs to, in advance.
• Assign virtual LDEV ID to physical LDEV ID as well.
(Do not operate the physical LDEV ID to which the virtual LDEV ID has not been set (Virtual
LDEV ID will be FF:FE) or the physical LDEV ID reserved for HA (Virtual LDEV ID will be
FF:FF))
• In the case of using virtual DKC which straddles multiple physical DKCs, make sure that
virtual LDEV ID is not duplicated in virtual DKC.
Resource Group (Resource Partition)
Do not create Resource Group other than meta_resource in the storage system because Resource
Group is not supported.
Exceptionally, this restriction can be relaxed under H-UVM configuration. See “Support scope
of Ext Stor configuration ” (page 22).
Raw Device Mapping (RDM)
LU which is used as P-VOL must be mapped on the application server in RDM (physical
compatibility mode).
Command device
In case of using XP P9500/XP7 disk array systems, command device must be mapped on the
application server/backup server in RDM (physical compatibility mode)
SCSI controller type
SCSI controller type of the virtual machine supports LSI Logic SAS.
SCSI controller created by VSS Provider
If RDM required sufficient free virtual device node is not available on the import destination virtual
machine during the secondary VOL import process, VSS Provider creates SCSI controller using
the following settings.
• SCSI controller number — Use from not created and smaller controller number
• SCSI controller type — LSI Logic SAS
• Sharing SCSI path — Nil
VMware HA
To use VMware HA, the following conditions must be fulfilled:
• WWN used for the failover of the node participating in VMware HA, write in the configuration
file using the “WWN of ESXi” specified option.
• Register the above WWN in HG which is used for VSS Provider.
• Confirm that the failover operates by using the corresponding HG in advance.
Restrictions and points of consideration 29
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