HP XP RAID Manager Software - Manual (Page 167)

an unmirrored HARD-enabled LV, then makes it mirrored on the fly without HARD-enabling
all sides of the mirror, that entire LV is exposed to data corruption.
•
LVM bad block relocation is not allowed on PVs that are HARD-enabled.
•
Oracle and LVM (VxVM) on HA Cluster Server
◦ If HA Cluster software writes to LVM metadata at regular intervals to confirm whether its
disks are available or not, then its LVM’s area must not be checked by Database Validator
by using the “-vs <bsize> SLBA ELBA” option.
Protection parameters and operations
RAID storage systems have protection checking parameters for each LU, and these parameters are
set through RAID Manager and its command device. RAID Manager supports the following
commands to set and verify the parameters for protection checking for each LU:
•
raidvchkset: Sets the protection checking parameter for the specified volumes.
•
raidvchkdsp: Shows the protection checking parameter for the specified volumes based on
the RAID Manager configuration definition file.
•
raidvchkscan: This command has three different uses depending on the options used with the
command.
◦ Shows the fibre port, target ID, LDEV, and validation checking parameters for the specified
volumes based on the raidscan command.
◦ Shows the journal volume list setting and information for the journal volume.
◦ Shows the Snapshot pool setting and information for the Snapshot pool.
Data Protection facility
The Data Protection Facility permits main operations to volumes that you can see on the host, and
prevents wrong operations. RAID Manager controls protected volumes at the result of recognition
of protection. RAID Manager recognizes only volumes that the host shows. For that purpose LUN
Security is provided for the RAID Manager environment.
It is not possible to turn ON or OFF the DataProtection Facility from RAID Manager. The
DataProtection Facility ON/OFF is controlled by Remote Web Console/SVP or SNMP. The
DataProtection Facility uses an enhanced command device that you define using the LUN Manager
software (or SNMP). When you define the command device, the DataProtection Facility is turned
ON or OFF to each command device, which has an attributes to enable the Data Protection Facility.
RAID Manager distinguishes the ON from OFF attribute when RAID Manager recognizes the
command device.
Figure 61 (page 167) shows the definition of protected volumes.
NOTE: If the command device is set to enable protection mode, there is no impact on RAID
Manager operations. RAID Manager controls pairs under current specification.
Figure 61 Definition of the protection volumes
Protection parameters and operations 167