HP 4000.6000.8000 Enterprise Virtual Arrays - Manual (Page 152)

Limitations
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HP P6000 Continuous Access is not supported with single path configurations.
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Single path HBA server is not part of a cluster.
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Booting from the SAN is not supported.
Figure 53 Oracle Solaris configuration
5 SAN switch 1 1 Network interconnection
6 SAN switch 2 2 Host 1
7 Controller A 3 Host 2
8 Controller B 4 Management server
Tru64 UNIX configuration
Requirements
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Switch zoning or controller level SSP must be used to ensure each HBA has exclusive access
to its LUNs.
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All nodes with direct connection to a disk must have the same access paths available to them.
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Single HBA server can be in the same fabric as servers with multiple HBAs.
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In the use of snapshots and snapclones, the source virtual disk and all associated snapshots
and snapclones must be presented to the single host that are zoned with the same controller.
In the case of snapclones, after the cloning process has completed and the clone becomes an
ordinary virtual disk, you may present that virtual disk as you would any other ordinary virtual
disk.
HBA configuration
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Host 1 is single HBA host with Tru64.
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Host 2 is a dual HBA host.
See Figure 54 (page 153) .
Risks
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For nonclustered nodes with a single HBA, a path failure from the HBA to the SAN switch will
result in a loss of connection with storage devices.
•
If a host crashes or experiences a power failure, or if the path is interrupted, data will be lost.
Upon re-establishment of the path, a retransmit can be performed to recover whatever data
may have been lost during the outage. The option to retransmit data after interruption is
application-dependent.
152 Single Path Implementation