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HP StorageWorks 4400 Enterprise Virtual Array user ... - BUSINESS IT

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VMware<br />

Fault stimulus<br />

Server path failure<br />

Storage path failure<br />

Fault stimulus<br />

Server failure (host power-cycled)<br />

Switch failure (SAN switch disabled)<br />

Controller failure<br />

Controller restart<br />

Server path failure<br />

Storage path failure<br />

78<br />

Single path implementation<br />

Failure effect<br />

Short term: Data transfer stops. Possible I/O errors.<br />

Long term: Repeated error messages in errpt output. System reboot<br />

causes loss of data on disk. Must crfs disk.<br />

Short term: Data transfer stops. Possible I/O errors.<br />

Long term: Repeated error messages in errpt output. System reboot<br />

causes loss of data on disk. Must crfs disk.<br />

Failure effect<br />

OS reboots, automatically checks disks. HSV disks must be manually<br />

checked unless auto mounted by the system.<br />

Short: I/O suspended, possible data loss.<br />

Long: I/O halts with I/O errors, data loss. HBA driver must be<br />

reloaded before failed drives can be recovered, fsck should be run<br />

on any failed drives before remounting.<br />

Short term: I/O suspended, possible data loss.<br />

Long term: I/O halts with I/O errors, data loss. Cannot reload<br />

driver, need to reboot system, fsck should be run on any failed disks<br />

before remounting.<br />

Short term: I/O suspended, possible data loss.<br />

Long term: I/O halts with I/O errors, data loss. Cannot reload<br />

driver, need to reboot system, fsck should be run on any failed disks<br />

before remounting.<br />

Short: I/O suspended, possible data loss.<br />

Long: I/O halts with I/O errors, data loss. HBA driver must be<br />

reloaded before failed drives can be recovered, fsck should be run<br />

on any failed drives before remounting.<br />

Short: I/O suspended, possible data loss.<br />

Long: I/O halts with I/O errors, data loss. HBA driver must be<br />

reloaded before failed drives can be recovered, fsck should be run<br />

on any failed drives before remounting.

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