HP EVA P6550 HP P6300/P6500 EVA User Guide (5697-2486, September 2013) - Page 166

Fault stimulus Switch failure (SAN switch disabled) Controller failure Controller restart Server path failure Storage path failure Linux Fault stimulus Server failure (host power-cycled) Switch failure (SAN switch disabled) Controller failure Controller restart Failure effect to a different served path. When the single-path node crashes, only the processes executing on that node fail. In either case, no data is lost or corrupted. I/O is suspended or process is terminated across this HBA until switch is back online. No data is lost or corrupted. The operating system will report the volume in a Mount Verify state until the MVTIMEOUT limit is exceeded, when it then marks the volume as Mount Verify Timeout. No data is lost or corrupted. I/O fails over to the surviving controller. No data is lost or corrupted. I/O is suspended or process is terminated across this HBA until EVA is back online. No data is lost or corrupted. The operating system will report the volume in a Mount Verify state until the MVTIMEOUT limit is exceeded, when it then marks the volume as Mount Verify Timeout. If the LUN is not shared, I/O is suspended or process is terminated across this HBA until path is restored. If running OpenVMS 7.3-1 and the LUN is shared, another cluster node having direct access will take over serving the device, resulting in no loss of service. In either case, no data is lost or corrupted. The operating system will report the volume in a Mount Verify state until the MVTIMEOUT limit is exceeded, when it then marks the volume as Mount Verify Timeout. I/O is suspended or process is terminated across this HBA until path is restored. No data is lost or corrupted. The operating system will report the volume in a Mount Verify state until the MVTIMEOUT limit is exceeded, when it then marks the volume as Mount Verify Timeout. Failure effect OS reboots, automatically checks disks. HSV disks must be manually checked unless auto mounted by the system. Short: I/O suspended, possible data loss. Long: I/O halts with I/O errors, data loss. HBA driver must be reloaded before failed drives can be recovered, fsck should be run on any failed drives before remounting. Short term: I/O suspended, possible data loss. Long term: I/O halts with I/O errors, data loss. Cannot reload driver, need to reboot system, fsck should be run on any failed disks before remounting. Short term: I/O suspended, possible data loss. Long term: I/O halts with I/O errors, data loss. Cannot reload driver, need to reboot system, fsck should be run on any failed disks before remounting. 166 Single path implementation