HP StorageWorks Storage Mirroring user's guide (T2558-96073, February 2008)

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 Disk Usage—The amount of disk space required for the Storage Mirroring program files is approximately 70 MB. You
will need to verify that you have additional disk space for Storage Mirroring queuing, logging, and so on. Additionally, on
a target server, you need sufficient disk space to store the replicated data from all connected sources, allowing additional
space for growth.
 Server Name—Storage Mirroring includes Unicode file system support, but your server name must still be in ASCII
format.
 Protocols and Networking—TCP/IP with static IP addressing or reserved DHCP addressing
 E-mail Notification and Server Grouping—In order to enable Storage Mirroring e-mail notification and/or save
server groups, the server must have Internet Explorer 5.5 or later.
 Storage Mirroring Version Interoperability—Only particular Storage Mirroring versions (not editions) can
interoperate. If both of your source and target are running the same Storage Mirroring version (for example, both are
running version 5.0) there are no limitations. See
Installation and upgrade notes on page 3-2 for details on the specific
version which can interoperate.
Installation and upgrade notes
 Since Storage Mirroring installs device drivers, it is recommended that you update your Windows Recovery Disk, before
installing or making changes to your servers. For detailed instructions on creating a recovery disk, see your Windows
reference manuals. Make sure that you select the option to backup the registry when building the repair disks.
 Because Storage Mirroring has operating system dependent files, if you are upgrading your operating system (to a new
major version, not a service pack) and have Storage Mirroring installed, you must remove Storage Mirroring prior to the
operating system upgrade. Uninstall Storage Mirroring, perform the operating system upgrade, and then reinstall Storage
Mirroring.
 If you are installing to a drive other than the drive which contains your system TEMP directory, the Microsoft Windows
Installer will still load approximately 100 MB of data to the TEMP directory during the installation. If you do not have
enough disk space on the drive that contains the TEMP directory, you may need to change where it is located.
 During installation, a file called dtinfo.exe is installed to the Storage Mirroring installation directory. This program can
be run to collect configuration data for use when reporting problems to customer support. It gathers Storage Mirroring
log files; Storage Mirroring and system registry settings; network configuration information such as IP, WINS, and DNS
addresses; and other data which may be necessary for customer support to troubleshoot issues. After running the
executable, a zip file is automatically created with the information gathered.
 Storage Mirroring 5.0 can interoperate back to version 4.4 but is restricted to the following limitations. The Storage
Mirroring clients can only control the same or earlier releases. To accommodate rolling upgrades, older sources can
connect to newer targets, but newer sources cannot connect to older targets. Configurations not listed in the following
chart are not supported.
Storage Mirroring version 5.0 Interoperability
NOTE: The program file can be installed to any volume while the Microsoft Windows Installer files are
automatically installed to the operating system boot volume.
Client Source Ta r ge t Supported
4.4 4.5, or 5.0 4.5, or 5.0 No
4.5 5.0 5.0 No
5.0 4.4 4.4, 4.5, or 5.0 Yes
5.0 4.5 4.4 No
5.0 4.5 4.5 or 5.0 Yes
5.0 5.0 4.4 or 4.5 No
5.0 5.0 5.0 Yes