PowerFlex Remove Multiple MDM entry from an SDC configuration

drv_cfg --query_mdms 

Above command shows that SDC is configured to connect to multiple PowerFlex or ScaleIO systems, one of which does not exist anymore and must be removed.

For example:

c:\Program Files\EMC\scaleio\sdc\bin>drv_cfg.exe --query_mdms
Retrieved 2 mdm(s)
MDM-ID 24bdeaaaaaaaaaaa SDC ID 5aaaaaaa00000006 INSTALLATION ID XXXXXXXXXXXXXX
IPs [0]-10.XX.XX.XX [1]-10.XX.XX.XX [2]-10.XX.XX.XX
MDM-ID bf5cebbbbbbbbbbb SDC ID ebbbbbbb0000000b INSTALLATION ID YYYYYYYYYYYYYY
IPs [0]-10.YY.YY.YY [1]-10.YY.YY.YY [2]-10.YY.YY.YY

In this case, MDM ID 24bdeaaaaaaaaaaa is the system that does not exist and must be removed.

Note: For Linux and Windows SDC hosts, use 

drv_cfg --query_mdms

 To verify MDM cluster information for single and multiple PowerFlex or ScaleIO systems. However, for ESXi SDC hosts verify MDM cluster information for single and multiple PowerFlex or ScaleIO systems from esx.conf file.

Linux:

1. For Linux SDC host, open /bin/emc/scaleio/drv_cfg.txt file.
2. There are multiple MDM cluster entries in the file. Delete the MDM cluster entry for the PowerFlex or ScaleIO system that does not exist anymore.
3. Save and exit the file.
4. Reboot Linux SDC host to apply changes.

Note: There is no parameter for drv_cfg.exe to remove the MDM cluster.
Note: After reboot, run "drv_cfg --query_mdms" to confirm MDM cluster IP addresses for the PowerFlex or ScaleIO system that does not exist anymore, are removed.
Note: "drv_cfg --mob_mdm_ip" utility is only used to modify IPs for a single PowerFlex or ScaleIO system.
Linux: /opt/emc/scaaleio/sdc/bin/drv_cfg


Windows:

1. For Windows SDC host, find the IP address list of multiple MDM cluster entries in the Windows Host registry under the following key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\scini\Parameters\mdms

2. Close "Registry Editor" after making the changes.
3. Reboot the Windows SDC host to apply the changes.

1. For the ESXi SDC host, verify the IP address list of multiple MDM cluster entries from esxi.conf file:

cat /etc/vmware/esx.conf |grep scini |grep -i mdm
/vmkernel/module/scini/options = "IoctlIniGuidStr=25288a6a-81d4-4f82-99a5-bd2dccbc2935 IoctlMdmIPStr=192.168.100.100,192.168.200.100+192.168.300.100,192.168.400.100"

2. Remove the MDM cluster IP addresses for the PowerFlex or ScaleIO system that does not exist anymore using the below esxcli command:

esxcli system module parameters set -m scini -p "IoctlIniGuidStr=25288a6a-81d4-4f82-99a5-bd2dccbc2935 IoctlMdmIPStr=192.168.100.100,192.168.200.100"

3. Reboot ESXi SDC host to apply changes.

cat /etc/vmware/esx.conf |grep scini |grep -i mdm
/vmkernel/module/scini/options = "IoctlIniGuidStr=25288a6a-81d4-4f82-99a5-bd2dccbc2935 IoctlMdmIPStr=192.168.100.100,192.168.200.100"