User guide

System option modes B–19
Hitachi Unified Storage VM Block Module Hardware User Guide
745 Universal
Volume
Manager
Enables to change the area where the information is
obtained as the Characteristic1 item from SYMMETRIX.
Mode 745 = ON:
• The area where the information is obtained as the
Characteristic1 item from SYMMETRIX is changed.
• When CheckPaths or Device Health Check (1/hour) is
performed, the information of an already-mapped
external volume is updated to the one after change.
Mode 745 = OFF (default):
• The area where the information is obtained as the
Characteristic1 item from SYMMTRIX is set to the
default.
• When CheckPaths or Device Health Check (1/hour) is
performed, the information of an already-mapped
external volume is updated to the default.
Notes:
1. This option is applied when the Characteristic1 item
is displayed in symbols while the EMC SYMMETRIX is
connected using UVM.
2. Enable the setting of EMC SCSI Flag SC3 for the port
of the SYMMETRIX connected with HUS VM. If the
setting of EMC SCSI Flag SC3 is not enabled, the
effect of this mode may not be achieved.
3. If you want to enable this mode immediately after
setting, perform Check Paths on each path one by
one for all the external ports connected to the
SYMMETRIX. Without doing Check Paths, the display
of Characteristic1 can be changed automatically by
the Device Health Check performed once per hour. If
SSB=AD02 occurs and a path is blocked, perform
Check Paths on this path again.
4. If Check Paths is performed while ShadowImage for
Mainframe pair and Compatible FlashCopy® V2
Mirror pair are defined in the specified volume, the
Check Paths operation is rejected with a message
“605 2518”. If ShadowImage for Mainframe pair and
Compatible FlashCopy® V2 Mirror pair are defined in
the specified volume, do not perform Check Paths
and wait until the display is automatically changed.
OFF -
Mode Category Description Default
MCU/
RCU