HP EVA P6550 HP P6300/P6500 EVA User Guide (5697-2486, September 2013) - Page 159

Risks • Single path failure may result in data loss or disk corruption. Limitations • HP P6000 Continuous Access is not supported with single path configurations. • Single path HBA server is not part of a cluster. • Booting from the SAN is not supported. Figure 80 Xen configuration 1. Network interconnection 2. Single HBA server (Host 1) 3. Dual HBA server (Host 2) 4. Management server 5. SAN switch 1 6. SAN switch 2 7. Controller A 8. Controller B Linux (32-bit) configuration Requirements • Switch zoning or controller level SSP must be used to ensure each single path HBA has an exclusive path to its LUNs. • All nodes with direct connection to a disk must have the same access paths available to them. • Single path HBA server can be in the same fabric as servers with multiple HBAs. • 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 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. • Single HBA path to the host with MPIO driver enabled to provide recovery from controller on controller link failures. Linux (32-bit) configuration 159