Upgrade Dell PowerFlex to v3.6.x

Modifying SDC parameters

Optionally, modify SDC parameters such as the virtual IP address of an MDM cluster.

The modification causes an SDC to use a different MDM virtual IP address or to update the SDC performance settings and configuration.

Copy the drv_cfg tool to the node.
The drv_cfg tool is not a part of the artifacts available on the support site. Contact https://support.emc.com to access this tool and the guidelines for how to use it.
If needed, update the SDC performance settings and the existing configuration.
This step is needed only if you change the settings after an upgrade.
View the complete list of SDC performance settings for the scini driver:
```
esxcli system module parameters list -m scini
```
Update the scini settings:
```
esxcli system module parameters set -m scini -p "...."
```
CAUTION:You must specify all parameters in this command when using the -p option. Any parameter that existed, that is not specified now will be replaced with 0 or an empty string.

Example for modifying virtual IP address:
```
esxcli system module parameters set -m scini -p
"IoctlIniGuidStr=7ea77fc9-6125-44c1-9746-9d20053aed93
IoctlMdmIPStr=9.10.21.141,9.10.21.142,9.10.121.142,9.10.121.141"
```
You can us the following cat command to get the full string output. This enables you to add or modify only the parameters you need.
```
cat /etc/vmware/esx.conf |grep scini/
 /vmkernel/module/scini/options = "IoctlIniGuidStr=7ea77fc9-6125-44c1-9746-9d20053aed93 IoctlMdmIPStr=9.201.112.254,9.201.111.254"
```
Copy/paste the info between the quotation marks (" ") and modify; otherwise, it will return additional values.

Selected SDC parameters are modified.