.Part 5 Storage Security Best Practices and Support Information HP SAN Design Reference Guide 785355-001

In the following procedure, the SAN consists of fabric A and a redundant fabric B. Each of these
fabrics is merged with a SAN consisting of fabrics C and D.
1. Identify and resolve any issues that can cause fabric segmentation.
2. Verify that each fabric provides a redundant path to all attached devices.
3. Verify that paths are open to each device that must remain online during the merge.
4. Select fabrics for merging, for example, fabric A with fabric C.
5. Close all active paths on the fabric selected for merging and prepare devices for downtime.
For example, use multipathing software to redirect I/O by performing a failover to the alternate
path.
6. Verify that the fabric selected for merging has no I/O activity.
7. Connect the selected fabrics (fabric A and fabric C).
8. Verify that the newly merged fabric contains all switches and that the zoning has merged
correctly.
9. Restore I/O operations on the new fabric from the multipathing software console.
10. Verify that paths are open and restored for each device.
11. Ensure that all paths and I/O operations have been restored.
SAN infrastructure monitoring
HP recommends use of the HP Intelligent Infrastructure Analyzer Software (IIAS) to monitor and
diagnose the physical layer of SANs in real-time, with an emphasis on the SFP transceivers utilized
in Fibre Channel switches. The solution is highly beneficial for enterprise SANs, where SAN
management can be cumbersome and tedious. IIAS is intended for customers who utilize HP storage
hardware in their SAN.
HP IIAS uses industry-standard protocols (such as SNMP, SMI-S, Telnet) to monitor the physical
layer (SFP transceivers) of a SAN. It diagnoses changes/events in SFP states and characteristics,
and presents SAN topology, inventory, and diagnostic information to the user in real-time. HP IIAS
enables you to:
• Discover and collect data for B-Series and H-Series switches in a SAN
• Periodically monitor a SAN at configured intervals using an active profile
• Monitor or diagnose degrading or failing SFPs in an active profile
• Generate current and historical reports
• Notify the user of any change in the topology or SAN component state
• Provide a SAN hardware summary in terms of component inventory
For additional information about IIAS, see the IIAS website at http://www.hp.com/go/iias
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