Hba Configuration; Risks; Limitations; Failure Scenarios - HP 6100 User Manual

HBA configuration

Host 1 is a single path HBA.
Host 2 is a dual HBA host with multi-pathing software.
See Figure 59 (page

Risks

Single path failure may result in data loss or disk corruption.
NOTE: For additional risks, see

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 supported on single path HBA servers.
Figure 59 VMware configuration
1 Network interconnection
2 Single HBA server
3 Dual HBA server
4 Management server

Failure scenarios

HP-UX

Table 57 HP-UX failure scenarios
Fault stimulus
Server failure (host power-cycled)
Switch failure (SAN switch disabled)
Controller failure
163).
Table 63 (page
Failure effect
Extremely critical event on UNIX. Can cause loss of system disk.
Short term: Data transfer stops. Possible I/O errors.
Long term: Job hangs, cannot umount disk, fsck failed, disk corrupted,
need mkfs disk.
Short term: Data transfer stops. Possible I/O errors.
Long term: Job hangs, cannot umount disk, fsck failed, disk corrupted,
need mkfs disk.
166).
5 SAN switch 1
6 SAN switch 2
7 Controller A
8 Controller B
Failure scenarios 163