HP Surestore Disk Array FC60 HP SureStore E Disk Array FC60 - (English) Advanc - Page 307

A parity scan compares the data and its associated parity to ensure they match. A parity scan cannot be performed on a LUN that has experienced a disk failure and is operating in degraded mode. Although RAID 1 LUNs and 0/1 LUNs do not use parity, you can still perform a parity scan on them. The parity scan compares the data on the mirrored disks. Note What should I do if parity errors are detected? If errors are detected during a parity scan, it is recommended that you contact your Hewlett-Packard service representative immediately. The occurrence of parity errors may indicate a potential problem with the disk array hardware. Displaying Parity Scan Status If a parity scan is in progress, you can monitor its progress. This will help you determine how much longer the parity scan will take. To display parity scan progress, type: ammgr -s Halting a Parity Scan You can halt a parity scan currently in progress. This may be useful if the parity scan is impacting performance and you want to reschedule it to run when the host is less busy. To halt a parity scan, type: ammgr -H Managing Disk Array Logs The disk array controller continuously gathers and stores information on all aspects of disk array operation. Array Manager 60 retrieves these controller log entries at regular intervals and stores them in a log directory on the host (/var/opt/hparray/log). The log files are valuable in monitoring disk array operation and isolating problems that may occur. On HP08 and later, major event logging is available. MAjor event logging provides more detailed information on disk array operation. Many events that were not logged in the Managing the Disk Array on HP-UX Managing the Disk Array Using Array Manager 60 307