HP EVA P6000 Storage - Manual (Page 160)

HBA configuration
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Host 1 is a single path HBA.
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Host 2 is a dual HBA host with multipathing software.
See Figure 81 (page 160) .
Risks
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Single path failure may result in data loss or disk corruption.
NOTE: For additional risks, see “Linux” (page 166) .
Limitations
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HP P6000 Continuous Access is not supported with single path configurations.
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Single HBA path at the host server is not part of a cluster, unless in a Linux High Availability
Cluster.
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Booting from the SAN is supported on single path HBA servers.
Figure 81 Linux (32-bit) configuration
5. SAN switch 1 1. Network interconnection
6. SAN switch 2 2. Single HBA server (Host 1)
7. Controller A 3. Dual HBA server (Host 2)
8. Controller B 4. Management server
Linux (Itanium) configuration
Requirements
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Switch zoning or controller level SSP must be used to ensure each single path HBA has an
exclusive path 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 path 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 path hosts that are zoned with the same
160 Single path implementation