HP StorageWorks Storage Mirroring DNS Failover Utility (DFO) release notes (T2558-96089, February 2008)

Version: 5.0
Description
The DNS Failove
r utility (DFO.exe) is a comma nd-line utility d esigned to list and/or modif y DNS resource
records assoc
iated with specifi c host names and/or host IP Addresses. This utility is installed as part of
the Storage Mirroring Application Manager setup.
This release a lso includes the following modification:
• Added new command for /addomain <ADFQDN>.
Installation Notes
After installing the DNS Failover utility, refer to the following documents for information on using the DNS
Failover utility with the Storage Mirroring Application Ma nager. To view the .PDF manuals, you must
have Adobe Acrobat Reader. If you do not have Acrobat, you can download it free from Adobe at:
w
ww.adobe.com/prodindex/acrobat/ readstep.html.
Application_Manager_Users_Guide.pdf—The User’s Guide is located in the directory where you installed
Storage Mirroring and also in the \docs directory on the CD. This manual contains a product overview
and step-by-step instructions for each Stora ge Mirroring Application Manager feature
Fixes
If you are uncertain about the issues or workarounds addressed in the release notes, contact
Hewlett-Packard Technical Support.
• To use pass
word encryption/decryption functionality, you must first register CAPICOM.DLL. To
register CAPICOM.DLL, o pen a c om ma nd prompt and switch to the directory where DFO.exe was
installed. Type the following at the command prompt:RegSvr32 CAPICOM.DLL
NOTE:
If the DFO was installed as part of the Storage Mirroring Application Manager, this step should
not be nec
essary.
• /dnssrvname [dnsservername] — The DNS Server name may be a Fully-Qualified Domain Name
or an IP address.
• If there are any DNS resource record t ypes listed which the administrator does NOT want to
modify upon failover/failback, then custom command line or script entries should b e made
using specific/recordtypesettings.
The DNS server specified at the command line must have access to the source-related resourc e
records. If the DNS ser ver specified does not have access to the resource records associated
with the source Exchange server, DFO will not be able to modif y the source-related resource
records upon failover/failback.
• DFO.exe generates a log file that tracks all changes made when modif ying or all records returned
when searching. DFO.exe also writes a single Windows Event Log entr y every time it is run. The
event entry will either be an informational, warning, or error-related message, and the "Source" of
the Event Log entry will always be "VBRuntime" (this is by design, as per Microsoft’s requirements) .
• The encryption file generated by the /setpassword command is machine specific. The
credentials file will not work if copied to another machine.
• By default, the DFO.exe will impersonate the account used to call it, unless valid credentials are
supplied in the command line. When the DFO is called within failover or failback scripts initiated
by Storag e Mirroring, the calling account will be the LocalSystem account of the local machine by
default. Unless the LocalSystem account (e.g., TARGET$) has the correct permissions to update
resource records on the DNS server , you will have to provide credentials in the command line,
HP StorageWorks Storage Mirroring DNS Failover Utility (DFO) release notes
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