Risks, Limitations, Failure scenarios – HP 4000.6000.8000 Enterprise Virtual Arrays User Manual
Page 158: Hp-ux, Risks limitations
Risks
•
Single path failure may result in data loss or disk corruption.
NOTE:
For additional risks, see
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 supported on single path HBA servers.
Figure 59 VMware configuration
5 SAN switch 1
1 Network interconnection
6 SAN switch 2
2 Single HBA server
7 Controller A
3 Dual HBA server
8 Controller B
4 Management server
Failure scenarios
HP-UX
Table 57 HP-UX failure scenarios
Failure effect
Fault stimulus
Extremely critical event on UNIX. Can cause loss of system disk.
Server failure (host power-cycled)
Short term: Data transfer stops. Possible I/O errors.
Long term: Job hangs, cannot umount disk, fsck failed, disk corrupted,
need mkfs disk.
Switch failure (SAN switch disabled)
Short term: Data transfer stops. Possible I/O errors.
Long term: Job hangs, cannot umount disk, fsck failed, disk corrupted,
need mkfs disk.
Controller failure
Short term: Data transfer stops. Possible I/O errors.
Long term: Job hangs, cannot umount disk, fsck failed, disk corrupted,
need mkfs disk.
Controller restart
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Single Path Implementation