HP StorageWorks Storage Mirroring Recover User's Guide (T5437-96008, November 2009)

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Storage Mirroring Recover uses ICMP pings to monitor the source for failover. A failover
monitor will not be created if ICMP is blocked (although the data and system state will
still be protected). You should configure your hardware to allow ICMP pings between the
source and target. If you cannot, you will have to monitor for a failure manually and
create a dummy monitor at failover time that can be manually failed over. Contact
technical support for assistance with this manual process.
Microsoft Windows ports
Full-server workload protection uses WMI (Windows Management Instrumentation)
which uses RPC (Remote Procedure Call). By default, RPC will use ports at random
above 1024, and these ports must be open on your firewall. RPC ports can be
configured to a specific range by specific registry changes and a reboot. See the
Microsoft Knowledge Base article 154596 for instructions.
Full-server workload protections also rely on other Microsoft Windows ports.
● Microsoft File Share uses ports 135 through 139 for TCP and UDP
communications.
● Microsoft Directory uses port 445 for TCP and UDP communications.
These ports must be open on your firewall. Check your Microsoft documentation if you
need to modify these ports.
Hardware ports
You need to configure your hardware so that the full-server ports and Microsoft Windows
ports are open. Since communication occurs bidirectionally, make sure you configure
both incoming and outgoing traffic.
There are many types of hardware on the market, and each can be configured differently.
See your hardware reference manual for instructions on setting up your particular router.