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## SIOS Protection Suite for Windows Patch Notes ##
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DKPatch_PW-9191-8912

Patch availability: General Availability 
Product (s) Supported: This patch is supported on SIOS DataKeeper for Windows v8.9.1

Issue(s) addressed by this patch:
1. PW-9191: ExtMirrSvc crashes when running DKCE in AWS


Patch description:
This patch provides the following

1. This patch prevents the DataKeeper service from crashing under certain circumstances while running in AWS.


This patch can be found on the SIOS FTP site at the following location:
        http://ftp.us.sios.com/pickup/DK_patches/PW-9191/v891

To download the patch and associated files perform the following steps:
1. Visit the ftp site
2. Left-click DKPatch_PW-9191-8912.zip to download the zip file
3. Unzip the zip file, there are three files:
	- DKPatch_PW-9191-8912.exe
	- DKPatch_PW-9191-8912.md5sum
	- readme.txt
4. Verify the md5sum by running the following commands in PowerShell. Expected result is 'True'
	- cd <path to extracted files>
    - $checksum = (Get-Content .\DKPatch_PW-9191-8912.md5sum).Split(' ')[0]
    - (Get-FileHash -Algorithm MD5 .\DKPatch_PW-9191-8912.exe).Hash -like $checksum

NOTE: Alternative download methods can be used. Once the download is complete a verification of the md5sum should be performed.

Installing the exe:
NOTE: This patch will need to be installed on all servers in the cluster
To install the patch, navigate to where the patch was downloaded and double-click DKPatch_PW-9191-8912.exe to begin the installation process.

Repairing the exe:
To repair the patch, navigate to where the patch was installed and double-click DKPatch_PW-9191-8912.exe to begin the Repair process.
Select 'Repair' and apply the patch.

Uninstalling the exe:
To uninstall the patch, navigate to where the patch was installed and double-click DKPatch_PW-9191-8912.exe to begin the uninstallation process.
Select 'Revert' and apply the patch.
Once the uninstallation process is completed the original file(s) will be restored.


NOTE: The DataKeeper Service will be stopped and restarted during the patching process. A system reboot is NOT required.