Set Alua - Fujitsu ETERNUS DX60 S3 User Manual

Chapter 3 Volume Management

3.17 Set ALUA

3.17

Set ALUA

This function sets Asymmetric Logical Unit Access (ALUA) for volumes.
ALUA can be set for "Standard", "WSV", "SDV", "TPV", and "FTV" type volumes that are to be mapped.
Use this function only when controlling paths for each volume. For normal operation, paths for all the
volumes in the LUN group with the host affinity setting are controlled according to the "Asymmetric /
Symmetric Logical Unit Access" setting of the host response that is allocated to the host group or the host.
• Rebooting the server is required after changing the ALUA settings.
• The ALUA setting is enabled when all of the following conditions are satisfied.
- The target volume is registered in a LUN group.
- The host affinity is set for the relevant LUN group.
- The TPGS mode for the relevant host affinity setting of the host group or the TPGS mode for the host
response that is assigned to the host is "Enable (Default)".
• When ALUA for the volume is not "Follow Host Response", ALUA is given priority over the "Asymmetric /
Symmetric Logical Unit Access" setting that is specified for the host group with the host affinity setting or
for the host response that is assigned to the host.
• For volumes that are used for the Virtual Volume function, ALUA cannot be set.
• For the ALUA setting of each volume, refer to "Performance (Host I/O)" in "ETERNUS Web GUI User's Guide
(Operation)".
• If the ALUA setting is not changed by using this function, "Follow Host Response" is specified for all of the
volumes that can be mapped.
For details on the parameters for this function, refer to
For the factory default settings for this function, refer to
The procedure to set ALUA for volumes is as follows:
Procedure
1
Select which volumes to set ALUA for (multiple selections can be made) and click [Set ALUA]
in [Action].
If a volume that cannot be mapped is selected, [Set ALUA] cannot be clicked. Conditions for volumes
that cannot be mapped are as follows.
• "SDPV" or "Temporary" type volumes
• ODX Buffer volumes
• "Usage" is "File" or "System"
323
ETERNUS Web GUI User's Guide (Settings)
Copyright 2015 FUJITSU LIMITED
"A.3.9 Set ALUA" (page 813).
"Appendix B Set ALUA" (page 991).
P2X0-1270-13ENZ0