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Chapter 9 Connectivity Management
9.2 Functions in the Action Area for Connectivity
ETERNUS Web GUI User’s Guide
Copyright 2013 FUJITSU LIMITED P2X0-1090-10ENZ0
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• TPGS Mode
Select whether to enable or disable the Target Port Group Support (TPGS) mode.
- Enable (Default)
- Disable
• TPG Referrals
Select whether to enable or disable the TPG Referrals.
The TPG Referrals function determines the priority path for each block when accessing volumes via
the ETERNUS Multipath Driver in order to prevent cross access. This function can be used for "Stan-
dard", "WSV", "TPV", "FTV", and "Standard (LUN concatenated)" type volumes.
- Enable
- Disable (Default)
• iSCSI Reservation Range
Select the reservation management range for iSCSI connection from the CA ports or the storage sys-
tems.
- CA Port (Default)
The reservation status of volumes is managed for each CA port. This is the conventional iSCSI res-
ervation management range.
- Storage System
The reservation status of volumes is managed for each storage system. Select this item when an
iSCSI connection is configured in a VMware environment. Reservation status remains for vol-
umes when a path is disconnected. This prevents Virtual Machine from hanging up.
The "TPGS Mode" setting is applied only when "Version 5 (Default)" is selected for the "Inquiry
Standard Data Version" setting. When a value other than "Version 5 (Default)" is selected, the host
response setting completes successfully but the "TPGS Mode" setting is not applied for the ETER-
NUS DX Disk storage system.
The TPG Referrals function performs normally when "Enable" is selected and all of the following
conditions apply:
• The ETERNUS Multipath Driver supports the TPG Referrals function
• "Version 5 (Default)" is selected for "Inquiry Standard Data Version"
• "Enable (Default)" is selected for "TPGS Mode"
Confirm that the CA ports that configure the iSCSI connection in the VMware environment are reg-
istered in the same CA reset group. All of the CA ports are registered in the same CA reset group by
default.