HP 6100 HP 4x00/6x00/8x00 Enterprise Virtual Array User Guide (5697-0733, Marc - Page 162
Risks, Limitations, VMware configuration, Requirements
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Risks See Figure 58 (page 162). • Single path failure may result in loss of data accessibility and loss of host data that has not been written to storage. • Controller shutdown results in loss of data accessibility and loss of host data that has not been written to storage. NOTE: For additional risks, see Table 62 (page 166). Limitations • HP Continuous Access EVA 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 58 IBM AIX Configuration 1 Network interconnection 2 Single HBA server 3 Dual HBA server 4 Management server 5 SAN switch 1 6 SAN switch 2 7 Controller A 8 Controller B VMware 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. 162 Single Path Implementation