Error Message

None

The solution is to use the "vxmirror" command.  Under normal conditions, vxmirror will use up space on the first enclosure before using space on the second enclosure. In order to force vxmirror to mirror across exclosures, it is necessary to create an entry in the /etc/default/vxassist file.

The vxmirror command calls the vxassist command to mirror the volumes. The vxassist behavior can be controlled by parameters in the  /etc/default/vxassist file. To mirror across enclosures,  create /etc/default/vxassist if it does not already exist and add the line:
mirror=enclr

# cat /etc/default/vxassist
mirror=enclr

# /opt/VRTS/bin/vxmirror -ag testdg

This will cause Volume Manager to mirror across exclosures.

v  testvol1     -            ENABLED  ACTIVE   4194304  SELECT    -        fsgen
pl testvol1-01  testvol1     ENABLED  ACTIVE   4194304  CONCAT    -        RW
sd disk1-01     testvol1-01  disk1    0        4194304  0         c2t5006016039A01140d0 ENA
pl testvol1-02  testvol1     ENABLED  ACTIVE   4194304  CONCAT    -        RW
sd disk6-01     testvol1-02  disk6    0        4194304  0         c2t5006016830208320d0 ENA

v  testvol2     -            ENABLED  ACTIVE   4194304  SELECT    -        fsgen
pl testvol2-01  testvol2     ENABLED  ACTIVE   4194304  CONCAT    -        RW
sd disk2-01     testvol2-01  disk2    0        4194304  0         c2t5006016039A01140d1 ENA
pl testvol2-02  testvol2     ENABLED  ACTIVE   4194304  CONCAT    -        RW
sd disk7-01     testvol2-02  disk7    0        4194304  0         c2t5006016830208320d1 ENA

v  testvol3     -            ENABLED  ACTIVE   4194304  SELECT    -        fsgen
pl testvol3-01  testvol3     ENABLED  ACTIVE   4194304  CONCAT    -        RW
sd disk3-01     testvol3-01  disk3    0        4194304  0         c2t5006016039A01140d2 ENA
pl testvol3-02  testvol3     ENABLED  ACTIVE   4194304  CONCAT    -        RW
sd disk9-01     testvol3-02  disk9    0        4194304  0         c2t5006016830208320d2 ENA

v  testvol4     -            ENABLED  ACTIVE   4194304  SELECT    -        fsgen
pl testvol4-01  testvol4     ENABLED  ACTIVE   4194304  CONCAT    -        RW
sd disk4-01     testvol4-01  disk4    0        4194304  0         c2t5006016039A01140d3 ENA
pl testvol4-02  testvol4     ENABLED  TEMPRMSD 4194304  CONCAT    -        WO
sd disk10-01    testvol4-02  disk10   0        4194304  0         c2t5006016830208320d3 ENA
 # vxdg free
GROUP        DISK         DEVICE       TAG          OFFSET    LENGTH    FLAGS
testdg       disk1        c2t5006016039A01140d0s2 c2t5006016039A01140d0 4194304   6225024   -
testdg       disk2        c2t5006016039A01140d1s2 c2t5006016039A01140d1 4194304   6225024   -
testdg       disk3        c2t5006016039A01140d2s2 c2t5006016039A01140d2 4194304   6225024   -
testdg       disk4        c2t5006016039A01140d3s2 c2t5006016039A01140d3 4194304   6225024   -
testdg       disk5        c2t5006016039A01140d4s2 c2t5006016039A01140d4 0         10419328  -   <<< testdg       disk6        c2t5006016830208320d0s2 c2t5006016830208320d0 4194304   6225024   -
testdg       disk7        c2t5006016830208320d1s2 c2t5006016830208320d1 4194304   6225024   -
testdg       disk9        c2t5006016830208320d2s2 c2t5006016830208320d2 4194304   6225024   -
testdg       disk10       c2t5006016830208320d3s2 c2t5006016830208320d3 4194304   6225024   -
testdg       disk11       c2t5006016830208320d4s2 c2t5006016830208320d4 0         10419328  -

Note: Storage Foundation with disks provided by two enclosures. This assumes that sufficient space has been allocated from the second enclosure that is greater than or equal to the allocated space on the first enclosure. That space must be added to the disk group which needs the volumes to be mirrored.